I’ve seen this complaint a lot with some of the newer shows, but it doesn’t really resonate with me. A good central character ought to be able to carry a show, and I don’t hold Trek as being inherently different in that regard. In fact, I think the original series would have been an example of a show like that if Spock’s popularity hadn’t been taken into consideration by later writers. Even then, I believe it would have a pretty low “pass” rate compared to all the '90s series.
(Incidentally, since Burnham wasn’t Captain until season 4, Discovery passes on a technicality for most of its run).