No he has a point with low level caster players who regularly dawdle while lost on their turn. Players who can't be bothered to read the rules take longer than average when they decide what playing a powerful and effective spell caster is just as low effort as the rogue constantly asking if they get sneak attack on that when they couldn't be bothered to remember how sneak attack works.This is really not what I experience. I have this experience even with experienced people who know many classes and spells, but they forget some details about it etc.
And even beginners who have problem with the system do not want to play a champion fighter. The only person I know who liked the champion fighter is one guy who likes to min max and play a champion for a one shot.
Nobody talks about redesigning rogue to "fix" sneak attack for those players, they correctly admit sneak attack isn't hard to understand and acknowledge that the player should read the class section more closely and remember it or play a class with less considerations (like some fighter and barbarian builds). There's no reason to design the most potentially complicated class with a prime goal of addressing the problema faced those when those players say no after getting told to do better or that they should really pick a different class

