I read the first page of replies, so sorry if people have already said what I am about to say.
The community has definitely changed. Like Blamph said, that's bound to happen because it's a game. But the new PvP tactics people are using are not surprising to me what so ever. Of course, it might catch me off guard when they use the tactics, but their existence isn't shocking. Remember last year when there were often threads about people thinking Minecraft PvP was boring? How it was simple, and it should be more complicated? Well the people that currently play are the people that made those threads because they enjoy how combat has changed.
We, the people that said "It's Minecraft, it's supposed to be simple" or something along those lines or really anything against the thread itself when something like that came up, like the way PvP is (really how it was now). Fast clicking with some strafing to kill the opponent.
PvP has changed to suit a chunk of the community that likes that method, and since that method is superior for killing people, it was adopted by many others whether they liked it or not because everyone wants to win the game somehow.
I got bored of Survival Games months ago. I can't stick with anything in Minecraft too long, because Minecraft is a simple game and there really isn't much to do once you've done a lot after playing the game as long as I have. The thing I enjoy doing in any game, and the only sort of thing I do in any game, is play with friends. Whether it's a round of Survival Games with a team, or just being in a skype call while all playing random games.
I had something else to add, but I forgot so I'm just posting this >.<