| If CentOS Stream is going to be just a FOSS upstream for RHEL, will you still pick Fedora Server over it?

Yes, but only because Fedora Server is (also/even more) a FOSS upstream for RHEL. Doing something that isn't Fedora (Workstation/Server) is "one more thing", however small, and I'd rather spend the brain tokens elsewhere. If it 10x'ed my app I'd do it, but I can't imagine it would.

Thanks for the links, I wasn't so mad at CentOS Stream the product itself per se, I think it's a valid product / change to the old model. My biggest issue is the changing of the promises - the supported life of the product changed in-production. That's a big no-no to me.

Fedora (upstream) requires you to keep up, but at least it doesn't make promises that it won't keep.