Garen really didn't change much, they gave him the buff with the villain and maybe his spin does more but he is pretty much the same.
He didn't feel that different when I played the new one from the old one so the fact that he's getting nerfed is what I don't like. He didn't do that great late game (which I don't agree with at all) some people say but that's his role.
People want champs to be good the entire game instead of having their set roles. Garen did great early and mid but fell off a little late game. But late game you are a mega tank who still does great damage and had an execute. Champs don't need to be godlike the entire game in the same way adc's are weak early but get stronger.
If you are weak late game than push and siege and end the game quick. It's the same in dota and its the same in any moba game.
I'm upset because I don't think he really changed at all but because people perceive he's better he's getting played more and getting banned and nerfed when he really didn't need either imo.