Most people probably don’t subscribe to news feeds that you or I might. They probably only see a blurb about anti-semitism and such going up.
I subscribe to a bunch of tech news and nerd blogs. I see multiple reports of each major change, with multiple takes, and multiple examples. My awareness of the problems is a lot higher than I expect the average user and I never even used the service.
It’s useful to remember that people who bother moving to an alternative that is less prominent and harder to engage are already quite different from the average. Those who signed up for BlueSky got invites to an alternative, so that doesn’t count. They did it to have a seat at the next potential big thing. Lemmy and Mastadon do not strike me as potential-next-big-things.