I've been playing Mario 64 since the 90s and have still to this day never been able to get up there (excluding the DS version which provides a cheat).
I used to think the reason getting up there keeps looking so easy in YouTube videos is because they're always clips from Speed Runners or other professional Gamers.
But recently I started watching videos where the entire gimmick was "this perron who never played Mario 64 before plays it for the first time" and somehow they keep easily wall kicking up there on the first try like it's nothing.
So I really am starting to feel like I am uniquely bad at this.