I agree with you. I will also miss Michael Riedel, the longtime theater critic of "The New York Post," as the co-host of "Theater Talk." The Wikipedia profile of Riedel makes no mention whatsoever of "Theater Talk." And, indeed, I could find no mention of Riedel's absence from the program on even the Theater Talk website.
Talk about so-called "fake news," it is as if Riedel had never had an association with CUNY's and PBS' long-running program devoted to theater, a creepy rewriting of media history which recalls Leon Trotsky's purging by Josef Stalin.
Let us hope the Theater Talk website will not remove all video that includes Riedel (as happened with Charlie Rose at PBS after his #Me Too status was revealed), because, even even if Riedel irritated some viewers and persons in the theatrical business, even if he had a falling out with the "powers that be" (namely, producer Susan Haskins) at Theater Talk, Riedel was still an intelligent guy who was well-read and well-spoken about theater, and made an indisputable contribution to the long-running and preeminent television show, the only one of its kind devoted to theater and broadcast nationally.
Personally, I enjoyed Mr. Riedel and thought him a good balance to Haskins' more emotional and politically correct demeanor. I had come to view them as a team in theatrical critiquing in broadcasting, similar to what Gene Siskel and Roger Ebert had done for film criticism on television. And I always really enjoyed those programs with the late actress (and Broadway legend) Elaine Stritch and the rapport "Stritchy" shared with Riedel. Plus, it could also be a hoot to watch those theater critics roundtables with Riedel, wherein he would, often as not, stick it to his peers in the tight-snit (yes, I meant that phrase) dramatic community.