I’d estimate that the next wave will be sooner, at the end of the month when the 3rd party apps shut down and a lot of people suddenly realise they have to use the official app and go “oh wait, is this what that protest thingy was all about?” It probably won’t be the critical-mass point (at a guess that would happen around the time old.reddit is closed), but it will likely make some big waves
Helpful tip: if, hypothetically, you come across a prolific poster who seems to only thrive on bitter negativity, you can go to their profile and click the “block” option next to the “follow” one near the top of the page and they’ll never turn up in your browsing again. Good for peace of mind.