Looks like he was tricked into deleting his own channel by someone masquerading as YouTube support. https://futurism.com/the-byte/youtube-channel-hunts-scammers-gets-scammed

I was curious too so I googled it:

Scam baiter Jim Browning bamboozled by scammers into deleting his own YouTube channel

https://www.bitdefender.com/blog/hotforsecurity/scam-baiter-jim-browning-bamboozled-by-scammers-into-deleting-his-own-youtube-channel/

From what I read, some scammer tricked him by impersonating YouTube Support and telling him he would lose all his adsense revenue, which prompted Browning to fall for it.

It was Jim Browning, as another comment said. I can never remember his name more than Jim, so I settled for job description, as he is easy to find that way.

But others have been through it also, Linus Tech Tips, The Spiffing Britt and Atomic Shrimp are the other big ones I know of, but there is plenty more. Of those Atomic Shrimp is also a scam hunter like Jim, so it definitely shows that just because you are very familiar with what it looks like you aren’t immune too it.

I can’t remember if they all fell for the same or similar ones or if it was different ones, but that really doesn’t matter so much.

And what happend was Jim and LTT got tricked into deleting there channels. LTT by a fake sponsorship and Jim I don’t remember someone else said it was fake YouTube support.

Spiff had something of a similar thing happen but I don’t remember the means, and Atomic Shrimp I believe was a different typ of scam not related to YouTube.

But everyone got their channels back in the end.