I feel like Markiplier keeps improving, over time his videos have cut out a lot if padding and fluff that was the standard in old school let’s plays, but it’s not a smash cut fest like some newer youtubers are.
He also is diversifying his mediums, like the movie that he’s currently making (not a “youtuber movie”, an actual movie adapted off the game Iron Lung).
The only real controversy of his that I can think of was when he stood up for PewDiePie when he said the n-word. Mainly because they were friends. With how many years he’s been going I’m surprised there’s not more.