Eh, I'm not sure I follow your reasoning. As you say, the reason there hasn't been a revolt is because the old UI is still up and working, but no matter how gradually they update the new one, the day they get rid of the old UI, there will be a revolt.
I guess the plan is that enough people will have started with the new UI and have never known the old one that even with the old people leaving, the site may still remain alive?
Yes, I wouldn't be surprised if a huge chunk of reddit users have never even seen the old UI before. Most users probably use the official app these days.
I guess the plan is that enough people will have started with the new UI and have never known the old one that even with the old people leaving, the site may still remain alive?