It just takes one generation of too many young children being led down the garden path of this completely bogus version of role-playing, to snap the chain between teaching DMs and learning Players. The very fact that the video maker simultaneously realizes that there will be push-back against what he's saying ("I'm just reading off the current rule-set ...) while failing to express serious misgivings about what he's saying is telling evidence that there is a growing army of cheerful, gormless drones who have already lost touch with the core principles of the game.
"Starting off, they do not use variant rules; the only exceptions are the variant race options and the variant point buy in the Player's Handbook. You are not allowed to start with a 1st level character that has fly ... so no aarakocras. When making the character and levelling up, the rule is, PHB plus 1, which means you're allowed the Player's Handbook plus one other supplemental book. One extra book. Also, you're not allowed to roll for anything that mechanically affects your character or character creation, or when you're levelling, so you don't roll for stats, don't roll for health and you don't roll for wealth. You can roll for fluff like personality traits ..."
Looking at this, we're not describing a broken game. We're describing the spectacularly broken social construct that surrounds the game, that consists of the community that plays the game. The rules above, all the rules, are specifically designed to cripple, restrain or emasculate the asshole munchkin who uses splatbooks, die rolls and circumstantial character enhancements in order to fuck with the campaign, fuck with the other players, and fuck with the DM.
And why do those splatbooks and character enhancements exist? Because the company needed money, because no logical thought was put into the universe being built, because for two decades the company responsible for fucking up magic cards, the game, with new cards that would destroy whole packs of old cards, thought this would be a good idea with Dungeons and Dragons, too.
Characters that fly? That sounds cool. Fifty supplemental books that enable all sorts of shit for people who were willing to buy those books, dig through all the badly written paragraphs and engineer what was said diligently, excitedly, expensively and without mercy? That sounds really cool. Variant rules? Hey, what the hell. It will be great!
And now here we are. Hamstringing players so that they have to play mediocre replicants rather than humans, who are encouraged to roll for "fluff" but must obey the marching orders of Mein Kampf, with thousands of participants all over the world playing a whole year at ONE adventure, that everyone else is also playing, with DMs reading out of the same book, like some badly written episode of fourth season Lost that takes 200 hours to see.
This is potentially the death of this game. Not because this shit won't be played ~ it will be played. It is being played, and it is very popular. No, the death is going to come because one day you're going to hold out dice to a player in your world and the question will come back,
"What are those?"