Audience capture I think, and an attempt to stay relevant. Trump and Covid seem to have sent quite a few of these internet celebs off the deep end.
Rogan, the Weinsteins, JBP, Lex Friedman, Maajid Nawaz, Ben Shapiro, Dave Ruben, Russell Brand, etc.
You may argue that some of the above were nuts to begin with, but they all now appear to be parodies of their former selves.
Sam Harris seems to have kept himself relatively stable but moving to a subscription model for his podcast I think has both reduced, and acted as filter for, his regular audience.
It’s a shame, as I enjoyed keeping up with the IDW back when they first came to prominence but now I have very little time for any of them.