… Even then, I believe [TOS] would have a pretty low “pass” rate compared to all the '90s series.

Agreed. I note elsewhere in this thread that I think TOS would struggle with this little “test” and it was THE Star Trek show when it all started.

(Incidentally, since Burnham wasn’t Captain until season 4, Discovery passes on a technicality for most of its run).

Indeed it would pass and I think the captains/crew of those seasons were well portrayed and balanced Burnham’s presence as a character as well.

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.

As you say. And to be clear, I’m not taking this too seriously, nor is it meant to be a complaint. Just a measure I noticed in my own mind. I am still watching all the Star Trek made, whether it “passes” this measure or not.