I once had the (dis)pleasure of meeting him once at a former company when he came onsite and he came across as every bit the condescending asshole as he does on bigzilla. Didn't really get the chance to get to know him as a person, but as they say, first impressions... I get that he's in a tough spot maintaining glibc, but a bit of tack in correspondence would go a long way.
I get where either were coming from (BSD was open-sourcing an established codebase, Linux was a from-scratch effort), but it does seem like that foundational culture persisted.
Sounds like GLibc is more of the latter.
Theo de Raat doesn't suffer any fools. He calls bullshit as soon as he sees it (ok, Linis does too) and is fairly uncompromising when it comes to code quality and security regardless of whether it's kernel or userspace.
Seems to me, Linus is primarily focused on kernel space being secure and as long as kernel changes dont break userspace, hes cool.
I appreciate both views, but tend to like Theo's better.