Google is cutting its operating costs and having an inactive account policy which some described as "harsh" because it entails the summary deletion of those accounts, while having some scandals with antitrust and incognito browser which saw them sued. Twitter is in steady decline due to the antics of Elon Musk which scared away a lot of financial backers. Reddit's API pricing are described as "expensive" and "harsh" as well which made a lot of users to jump ship to Lemmy et al.
But they are all far from being climaxes because Wikipedia, once the "purest" place of the Internet, had been getting increasingly negative coverage where the distortions in topic areas related to the Holocaust and Israel were reported, and according to credible rumors on an online forum populated with former Wikipedia editors, there are 20+ sexual harassment scandals against females committed by sysops and users which could be published on mainstream publications as a long form feature story next year.