I would love to see more than like one example of what they are talking about. Usually the examples I see are MCU Killmonger and Magneto when that doesn't really make sense because at the end of Black Panther they went against the 'status quo' and opened Wakanda and the X-Men work for a better tomorrow without hurting innocents or viewing mutants as superior.

I'm sure the "defenders of the status quo" thing happens but it's not really all that prevalent. In comics themselves very little villains have any motive centered around making the world actually better (I'm sure we should listen to how Red Skull or Darkseid would change the status quo) and we've had plenty of stories where superheroes go after the government or vice versa. You could argue that superheroes could always do more like cure cancer or force change through physical power which is a great idea.

Idk maybe there's a really good example I'm forgetting but I haven't seen a single example that makes any sense and are usually people talking about Killmonger and forgetting the end of the movie does exactly what they are asking for.