That's not how it works. His site uses "Star Trek" in its name, which is copyrighted by CBS. So they can take his site name whether he owns it or not.
And what's the process of them taking it from him. I'm fairly certain there's... lawyers involved.
And as I said before, that's not true. And as for all the other sites using "Star Trek" in their name, yeah, if CBS decided one day that they wanted all that gone, it would be gone. Fan sites mean nothing to them. They exist at CBS's pleasure, because for right now CBS has no reason to go after them, unless it's a special case like StarTrekBeyond. Yes, fans might be unhappy about it but would they stop watching Star Trek? Hell no.
So not only are you an intellectual property rights lawyer, specializing in domain name seizures, but now you're claiming to speak for all fans everywhere. That escalated quickly.
But let's be clear for a second, so you're honestly saying that if CBS/Paramount decided tomorrow to have every fan site on the net taken down that there would be zero backlash for that?
I think you fail to understand basic human reactions, to say nothing of the hardcore types who take the time, effort, energy, and money required to do a fan site. Suddenly CBS/Paramount slaps them all with cease and desist orders (which somehow magically doesn't involve lawyers apparently) and there's absolutely zero negative reaction to that move? You don't understand people or fans at all then.