Scholes was highly critical as a pundit during Mourinho's reign as United manager which ended just before Christmas.
The legendary Reds and England midfielder, 44, was confirmed as the new Latics manager on Monday on an 18-month deal.
And as Scholes prepares to stand in the dugout for the first time he accepts he has left himself open to criticism but isn't bothered about what people say.
"I think he (Jose) will be watching results, whether he will be watching the games, I am not too sure," he said.
"That is part of the thing that bugged me a little bit.
"I wanted to get into it anyway but I have left myself wide open.
"I have been quite critical. If pundits - I don't think we will get many pundits watching - if we are losing games I am sure people will be popping up.
"They can say what they want, I have never really understood why players and managers take notice of what pundits say anyway. They are just giving an opinion on the game and get paid for doing so. If anyone wants to have a dig at me, I won’t be taking any notice. The only person I answer to is the owner."
He added: "It might be the biggest mistake of my life - I don't know. Or it might be the best thing I ever did. There's an uncertainty there, I don't doubt that. That's how I'm going into it.
"A manager can't do much without players who have the ability to get out of the league and I think these players have that. "
The owner Abdallah Lemsagam sat alongside Scholes at his unveiling and the new boss said he has had assurances that he will be left to pick and run the team as he sees fit.
He said: "I don't think there was any need for a conversation. As the owner of a football club, he is going to be interested in his team, I am sure about that. He wont be picking the team - myself and the coaching staff will be picking the team, so I think we are quite clear on that.
"I wouldn't be here if I wasn’t confident on that. Not confident, sure of it. Like i say he is interested in his football club, but he runs the football club and I run the football team along with my staff."
Scholes was part of several legendary United sides which played flowing, attacking football. And despite the club's position in the league, sitting 14th in League Two, he says wants to bring an attacking brand of play back to Boundary Park.
"When you go into a football club, it is usually a bit of a mess but I think what (interim manager) Pete Wild has done over the last six weeks has been very good.
"I have seen a lot of the games and watched a lot of games and the way they have played and style wont be too much different from what I want.
"Obviously growing up watching Oldham, growing up as a Man United player, I want attacking football, I want to be entertained on the sideline like a fan would. Hopefully we can bring that style of play.
"I can't say I want them to play like Manchester United just yet but I want them to play an entertaining style of football. I want the players to think about scoring goals and winning games."
Scholes said earlier he would be using his contacts at Old Trafford as part of his recruitment drive.
Ole Gunnar Solskjaer has admitted he has spoken to his former boss and mentor Sir Alex Ferguson numerous times during his stint as caretaker United boss and Scholes said he would have no hesitation doing the same.
"I'd speak to anyone yeah, I'm sure the gaffer is on the other end of the phone.
"He'll want me to do well and if I need any help from him, I'll be ringing him, of course I will. I've got great experience with Gary (Neville) too, what he did in Valencia, Ryan (Giggs) with Wales and under (Louis) Van Gaal. A lot of different experiences, I'll definitely be speaking to them a lot. When I'm not quite sure what to do I'll be looking to them for advice."
Asked if he has 'the hairdryer' in his locker like his old boss he said: "I don't know, we'll have to wait and see won't we?"
Scholes, who grew up in Middleton used to stand on the Chadderton Road End at Latics games with his Oldham-supporting dad and says he has great memories from the club's highest moments in the late 80s and early 90s.
"The old Chaddy End, honestly you couldn't stand up in there, couldn't get a seat.
"The runs to Wembley, obviously were memorable. Though they were a little bit difficult at times because I was an apprentice at United. The one at Maine Road, I was in the Oldham end. It was 3-3, Andy Ritchie scored two I think. And Earl Barrett too?
"I think I'd just left school so i was going to United as an apprentice the year after. That's probably one of my best memories, so close. Then there was the one at Wembley when I was an apprentice, Oldham were winning for ages and Mark Hughes scored the volley. I think Nicky (Butt) came on actually as well.
"I wasn't an Oldham fan then, I was United. A lot is made of it but it was my dad was the Oldham fan, I was a United fan. I came here because it was easier and because it was great to watch under Joe Royle.
"My dad was from Middleton but always an Oldham fan from years and years ago. He used to take me to all sorts of away games."
He added: "I've got family and mates who still come here. There is a lot of people to please and I will have to block a few numbers on my phone if we get beat. But I am looking forward to it, it excites me. "
It all begins with tomorrow night's clash with Yeovil at Boundary Park, and asked if he'd thought about what his first team talk will be, he said: "I've thought about it yeah, I didn't sleep much last night. You have to address the players straight away, tell them your beliefs. I'll be nervous tomorrow thinking about the team.
"They're in a good place at the minute, great win on Saturday. I don't think there's that much to change at the minute so I think we just carry on as we are. "