Will his actions cause another uprise from people calling him to hand over the ownership of the domain?
I was surprised (and worried) when I first read someone other than theymos owns the domain. But then I realized he has pointed the domain to this forum for many years, which makes him reliable in my book.
If, however, at some day the domain points to a different server, and this forum is gone, I'm pretty sure theymos can just continue the forum from a new domain name (say bitcointalk2.org). If he publishes the new link on Reddit, most users will be back soon enough.
It has been suggested recently that Cobra hand over the ownership of the domains (at least about bitcoin.org) to the Bitcoin foundation
This sounds like a good long-term solution, in case something happens to Cobra (and I hope for his sake that won't be in the next few decades).