TBH I never see them. I don't know what charmed allow-list I'm on in Google's infra, but 98% of my attempts to repro these reports on Reddit, Mastodon, here, et. al (Incognito mode or no) fail.
This suggests to me that what people are generally seeing is churn, not lack of action (i.e. individual bad actors get taken out but they're up again soon).