Just read the Richards problems, if hes indicated in them, then of course he should step down, but the investigation is ongoing, so I'll wait for the actual facts.
With Bialik, she's Jewish, so her supporting Israel is like saying the sky is blue. Her words on rape were what she done to discourage any harassment against her, and she has since apologized and done at least an event to talk about it. And her Vaccine position is only her own possition, she wasn't asking anyone else to take it. It appears she has since been or will be vaccinated with her kids when eligible, so not a problem even if I cared her stance on Vax.
So at the moment, happy they found a permanent host, not my choice, would probably be Levar, but hey, my opinion doesn't mean much.