You're confusing new games appearing with games changing.I don't know why doesn't SF2 play like SF3 which doesn't play like SF4? Games change over time, Melee players are so averse to any kind of change so we get topics like these in spite of the superior Smash 4.
Why do some people still play Super Metroid and call it their favorite game when Metroid Fusion exists? Oh yeah, because they enjoy Super Metroid better. Same thing with Smash. Some people think Melee is a superior game, and they shouldn't have to stop playing it because there's a new game on the block (especially with how much the Melee scene is thriving 13 years after release).