https://github.com/ziglang/zig/issues/14172#issuecomment-164...
Yes, it's petty stuff.
That's a rather large accusation to throw around. What's the context behind this?
But to give one example out of several, at one point they strategically edited and deleted some comments on a small repo of mine (from before GitHub showed you the edit history) when I announced my (completely unrelated) full-time open-source project, to make me seem an asshole to try and get "revenge" for their perceived slight of denying a pseudo feature request ("pseudo" because they were spamming the same kind of feature request to hundreds, if not thousands, of repos).
I've seen this type of thing a few time with this person: an accusation that makes you go "oh wow!" and then you look in to things and it turns out it's either a spectacular exaggeration or outright misrepresentation (i.e. lying). Maybe they're right this time, but I can't even be bothered to look in to it any more.
My guess it's probably something minor, like copying a few lines of trivial code or the like, at most.
(Not involved or affiliated with Zig at all, just observed this person's behaviour over a period of many years).