Amazing. You are wrong about every point you make.
What? lol. No, 1000 times no. Any activity that FORCES you to create a group before even playing can not ever be the best.
And how many have you tried? As all 4 I play at max level and all the rest I level play just fine...
Another one of your baseless hyperboles. No, m+ was never the best thing. Dungeon content stopped being interesting after WotlK when they removed badges and rep tabards. M+ is just icky.
Maybe obsess less about loot and just play the game. Who cares what other people get, they play their game. You'd be much happier. I know I am.