1) Useless Updates : Why is everyone saying the updates are useless? 1.8 added a lot of new environment to Minecraft, as well as 1.7 (new biomes, flowers, bosses, etc.). Plus, there have been new mechanics that have improved gameplay a crud ton along with new mobs. I don't see how new blocks are useless in a building game. Name change doesn't affect anything or anyone. Everyone wanted it, anyway. It just allows you to get a new name, goodness gravy.
2) Notch left us Notch has been gone from Minecraft for a while now, and he just left Mojang to move on to other things in his life. I don't blame him.
3) Servers : Some of this I agree with. I do agree that most servers are quite bland nowadays. But I don't really like how you described the annyoing players as kids. Not all of them are screaming nine-year-olds, a lot of them very well may be teenagers or maybe even adults. Just throwing that out there.
4) Kids : Let an immature kid do what an immature kid wants to do. And Minecraft isn't just about imagination. Adventure! Fun! Building! You don't need a wide mind for those things.
5) Youtubers! : I don't see how a youtuber has anything to do with this. They can do their funny mod reviews, or lucky block challenges or whatever. A lot of youtubers actually like it when a new update starts to come out, because it adds variety to their videos. And just because they're youtubers means they can't make an account on here? Would you like them to invade the Minecraft fourms instead? PMC is actually very well known.
6) Herobrine and kids..... The Herobrine thing is dying off, and the "kids"... just let em' be, that's the easiest solution.