on social / relationship / alt lifestyle discussion subs, hobby discussion subs, product review/discussion subs, etc. the balance is a lot more even.
the power users submitting all the posts to /r/mildlysupercringeinfuriatingontwitter will pack up their toys and leave but the people using subreddits to discuss their niche outdoor hobby, their home reno DIY project, their alt sexuality, etc. will just keep on chatting away.
would not mind at all if every sub with more than 1 mil subscribers just got wiped and had to be replaced with new ones (maybe go to read-only / archive for the google searchability). like a forest fire to clear up front page real estate for new growth.