Wow, a solid 2 M+ huh? lol
What level were those solid 2 keys you ran on your rogue?
You’ve brought up all these “facts” seemingly, so it’s on you to bring proof as to why/how M+ is ruining or has made raiding obsolete.
Fact is, you can’t. M+ and Raiding are two different things, and ppl enjoy different things for different reasons. That’s why there’s still a form of PvP in the game, though some would argue that it also should not be b/c it isn’t what it used to be.
Your account shows absolutely NO MYTHIC PLUS progress/achievements, and if your rogue is Daggersfly that you speak of that you’ve run those two (2) M+ on - there’s no M+ progression on that character either. And if you do have progress on that rogue, it isn’t much b/c it’s ilvl is only 190. 
