1: The vast majority of content is not for mythic. You litteraly have a few spells and numbers changed up but thats it.
2: Almost the same as the first answer here only that what works for ranked works for unranked and there is nothing chnaged at all for ranked other than the queue itself.
3: You gonna have to back this up somehow. The matter of balance has been one of the most debated parts of WoW since ever after all.
4: True but the worldfirst race and M+ did well for WoW and pushed a 15 year old game back up to the number one game on twitch at times. That is money for Blizzard.
5: Oh but it does matter a LOT. The rage when classes are unbalanced is silly. Even a few % is enough to render a class "unplayable" in players eyes. Games like Warhammer Online litteraly died becuase they did not care about balance.
6: Doubt it, but as always, there is place for all kinds of players in WoW. That is why it survived where other games did not.
7: No but there is value in having something to strive for. If you just reach the end you'll move on to other games. 10+ is also really easy and most should be able to do that. Anything above that is just pushing leaderboards. If thats not for you, skip it.
8: No, thats why the majoroty of content is for players without guilds and fixed groups.
9: No but having players at the top to look up to and so on brings in new players and keep the old ones trying to get better. Games like LoL and the like show that quite well. Besides, it's a small part of the game.
10: Then don't do it. You obviously aren't looking for the hardcore part of the game anyways so you'll do fine without thoes quests.
11: No, not for everyone.
12: This seem like something you made up. Got any actual studies on the matter?
13: Just what?
14: This is getting silly. If you can't handle games thats your problem, not Blizzards. Thats like saying that making food that tastes good gets people fat. Same there, it's your fault that you are fat, not the ones making the food.
15: WoW doesn't. I've been a mythic (or HC and just raids when that was the only option) since vanilla and I've managed to have a successfull career and live a full life outside of the game. Again, if you can't handle the game, thats your problem not Blizzards. Stop blaming others for your own shortcomings.
16: Again, this is getting silly. Get a grip.
17: It is VERY unlikely that most players play 13h. Even the top players in the world do not spend even close to this much time in the game on average. Heck, most method players probably won't spend 2 hours every day outside of that week or two that they push.
18: Ok, so you mean they should just give you the loot for free? See the boss fights on youtube if you don't like to play them. It's that simple.
19: Then do so. There is a lot of solo content in WoW these days.
20: No it doesn't. Good thing WoW doesn't force you to do anything.
This was a huge waste of my time but there you have it. I doubt any of what you added here would be of any use to Blizzard as it's mostly just you crying about, well, I'm not quite sure what. But then again, you posted it on a third party website so it's not like they'll actually read it.