The good thing about pixel art is that both programmers and artists can make it. The bad thing about pixel art is programmers don’t know what the difference between their art and the artist’s is.
I would say if he wants to make games for the sake of introducing his dreams into the world, rather than to make money, then the art does matter. But he then says that this is the aesthetic he likes, so I don’t think it’s a money vs ideals thing.
I think World of Warcraft looks really bad, now at least. Like, deformed cartoons with uncanny valley movements and animations, insanely stretched FoV, everything super saturated and brights and darks scattered randomly, blurred textures. But there are a lot of people who think WoW looks absolutely amazing.
For people who actually play games and not just gaze upon them from the sidelines, I think unfortunately the issue with the art is mainly perception - these people have internalized “ugly games look like this” and “pretty games look like this” without any real critical discrimination. It’s the opposite the problem the developer has.