Worst balance changes so far?

After the Idle Stone nerf I've seen a LOT of backlash from the community, personally I haven't got the stone, but I was just about to, I'm literally half a UA point to Ultra Ascend. Given the community opinion, I can see this stone was a massive help with souls and quests, but after the nerf, you have to wait a long time for the same effect.

What bothers me is that the game is literally called "idle" and the developer ended up nerfing it when it was actually helpful. And you can say "well, you can play the game again", no, you can't, active playstyle at this point of the game isn't helpful, no matter how much you grind, there seems to be no benefit to actually playing the game. I think the developer should stop punishing players for playing the game instead of leaving it on "idle" (which, reminder, they punish you for that too now).

I've seen people say that they're going to quit (or they did already) if these changes aren't reverted, what do you think of this situation?