I can totally reassure you on your last concern: everything that goes into Stream is approved for a minor release in RHEL. That's not changing at all. Cutting edge is still Fedora's turf. :)
To be clear, I'm RHEL and CentOS _adjacent_, rather than actively _in_ them. But I think (rough launch and more than a few communication issues) aside this is generally gonna be positive.
I think HN is the only place where you can casually provide feedback and get answers about an OS project from one of the core people in it. Fun!
Glad to meet you, BTW.