One of the videos they striked him on was an unlisted video with 5 views comparing the speed of Grayjay vs NewPipe.... YouTube is really digging for stuff
Edit: I think I misunderstood, you're just pointing out that he didn't say anything at all, competitive or otherwise. It got my attention because I have some silent videos that are used to supplement some application notes and would rather they didn't get my account banned.
There are plenty of very clear cut examples of Google banning people for spurious reasons; I'd rather get up in arms about those.