He didn't mention anyone (not directly at least) and used it more to teach people about the difference between content ID claim and copyright strike.

The only way I see it making more drama is if the guy in question makes other baseless claims and/or throws out insults

Not like there haven't been previous videos from other people and Linus generally addresses that in the next WAN show and that's that. Giving this such attention seems to feed trolls rather than abate their rampage.  

The WAN show was/is down, so I'd understand why he'd want to make another vid.