I mean, I like openbsd the product, but the community culture is notoriously terrible and unwelcoming to newbies.

I find it just the opposite. I can think of few communities nearly as patient or welcoming to anyone who's earnest and willing to put in the work to learn; true, there's no coddling or hand-holding, and, indeed, it tends to be very direct in calling out foolishness or laziness, and can reach epic proportions when it comes to dishonesty or entitlement, but nothing which can't be processed by emotional maturity, nor the gratuitous pedanticism-fueled browbeating often seen in some I-use-foo-btw open-source communities despite their shiny CoCs.