They aren't trying to make this game, League of Legends, shit. They love this game as much as we do and are constantly trying to improve it. Every change is made to try to better the game, NOT to ruin it and watch and laugh as people become angry about it. Imagine if you got all this backlash doing something you loved and worked hard on, it would feel like shit.
That's all, Remember, Rioters are still human.
Edit: Not all changes work well, or end up working well in the long run, but they are an attempt at making the game better.