if you read the blue text at 1:05 i do not see twinks getting nuked in the first two lines
the third line imo appiles more to high levels, as alot of 10/11s are not even built with max socket gear
gems and enchants at high levels are useless, because they are nerfed to the level of the TW event. blizz put them on a template and scaled to make it harder for higher levels, that already is in the game.
i think going into SL blizz did the nerf to stop high levels during BFA and prior, who built TW twinks, they would use older gear for max sockets. older gems and use older enchants because newer ones were crap. blizzard at one time was scaling up and down gear to match the expac TW event, this started when TW was intro'd during MOP. a 85 in BC thru Cata gear could roll a TQ dungeon with ease. these high level players doing this during MOP is much the same as a 10/11 does not
the problem was there when blizz brought back the mage tower event, a fury war with dual MOP boa's enchanted with crusader (used to not work past level 60) and older gems to blow tthru MT, knocked out all achieves. etc. bellular talked about it in a vid also. someone at blizz in the DEV dept jacked with crusader enchant with like a 7000 heal and full 100 str. was sorta odd that all the key influencers knew