You're the one that claimed Perforce was better than git and could do this "without conflict or even awareness of the other person", so why don't you explain how git is worse? (I've never used Perforce and am genuinely curious what clever kinds of things it can do around merges, but more detail than "it's state-of-the-art and git is not" would be useful)

No, it is Linus who makes a bunch of claims about how Perforce is worse, in the video.

If two people edit the same line of code based on the same original version, that's a conflict and there's nothing any SCM can do about it. Human must merge. But there's no reason that several developers can't work on different functions or other disjoint areas of the same file, unlike what Linus is claiming in the video.

The video is essentially a long straw-man argument where Linus takes shitty part of CVS and SVN, which were terrible, and applies them to Perforce, which it's clear he has never used.