FPS characters have invisible crab legs.
Playing a game with realistic FPS movement like milsims is a totally different experience.
When it comes to fun and intuitive movement, I would say realism should go straight out the door. I want to feel like a cheetah chasing a goat across a cliffs edge in games. Personal preference but I feel like objectively more fun.
That seems like a strange comment in a thread about a 2d platformer. Nothing moves like a 2d platformer character either. So both don't move "naturally" and both feel good to many people?
Bah. Doom2016 has some of the absolute best (meaning fun) movement in the business and it is the absolute definition of fluid.
Lex Fridman's interview with Todd Howard goes into this in depth.
Blind Forest though? Chef's kiss