This looks utterly depressing for Black, and probably is objectively lost too.It's really hard to defend c6.
French defence: black genuinely disconnected?

@harryz I'm pretty much the same. @mainline_novelty - I thought he might play Rc6 to defend the c pawn

Yeah, but the problem is, White can stick his Rook on c5, and Queen on c3, and keep Black tied up, and then either break through with some sack on the Queenside, or start targeting weaknesses on the K-side.

That said, I don't think Black should be resigning here, but Black probably was just completely disgusted with his position and just decided to ragequit.
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All identities protected - but was the disconnection genuine or a resignation in disguise? Was this a draw technically?