There may be fans like that yes. Fans want success and when a club has been as successful as United that almost becomes an expectation. It was the same with Liverpool fans for all those years I'm sure.Unfortunately, I think there is a, larger than we'd like to admit, portion of our support (especially online) that were/are glory hunters who started supporting United for the trophies. They never really embraced the club or what made United unique, they just lived vicariously through the success and got to act like big-time Charlies online whenever we did well.
I'm not a United fan. I used to be, I used to watch every game and then my interest waned and I stopped watching most of their games. I actually have to say in Oles defense this team is a lot more fun to watch and so I do watch more of their games these days.
That doesn't change my opinion that I think Ole isn't going to win silverware with United. He's done a really good job and his team is better to watch than recent years (there are still games where its a little dour). So it all comes down to what a fan wants. Do they want success or do they want entertainment. Ultimately I guess the best would be to have both.
If they want entertainment then managers like Conte are absolutely not going to be the answer. But Conte probably would win a major trophy.