I literally did not renew last month after twelve years of paying, and longer overall, and the UI was the last straw. I installed the "classic" UI plugin, but it's like you say, I know they're going to drop it. I figured that if I have to use a UI like their new one then I can use VSCode as well, there's no real reason to stay. The real cutting edge stuff is happening over at VSCode anyway. Plus Jetbrains never made a decent VCS interface and I can always use an older version with a permanent fallback licence.