The post feed is sorted by newest updates. But you can't sort it further by tags.
And yes, a browse section where could do that too would be spammed. Some publishers already try to game the system to reappear on recent. They are hurting themselves, in my opinion. Deleting a game and republishing it will make you get lost on all collections, and you can't accumulate ratings. It also makes you look like a bad agent for any player noticing what you do. And as you said, they would reappear there with major updates anyways, so it is so useless and annoying.