It's hard to defend Fischer because he was a massive weirdo. Magnus has had far more skin in the game long term though, so I'm generally willing to hear him out.
I mean, massive weirdo, and maybe not Magnus... but he didn't invent Fischer Random Chess because chess was too hard for him. He dominated for several years, right? The game wasn't as advanced or computer prep dominated as it is now, but he seems like he was arguing from a very similar position and mindset as Magnus.
