You're assuming that millions of people are leaving (over the last 10 years mind you) because of the things that you personally don't like about the game. WF/TF didn't "Destroy" or even "hurt" gear progression. Have you even played WoW since they added TF? You're regurgitating some of the same fears that people had before they understood how extremely unlikely it was for something to get a high TF proc.
Your complaints can basically be boiled down to accessibility which was the entire point of WoW from the start, to be more accessible than it's predecessors. And RNG, which yes there is a lot of, but the problems with it are vastly overstated for attention. Since they made raiding accessible to the casual through LFR the quality of raids for those of us that actually raid at the highest level has increased dramatically, so I'm thankful they did that. And Mythic+ is amazing. I love that the casual has access to a lot of things in WoW because if they keep playing the game keeps getting updated for the rest of us. Casuals carry this game and likely every other multiplayer game that you enjoy.
No you don't. If you're going to lie on the internet you should at least do a little research first. There are 56 people with an ilevel of 420 or higher. Just FYI.