Did y'all respond to him via email like he asked? If so, then that'd explain his lack of replies here.
Y'all are doing some cool technical work, but this insistence on "either give us consent to air your dirty laundry in public or else we won't respond to you at all" raises a pretty big red flag. I'm sure there was a perfectly good reason for banning his account (I'd guess something to do with the VPN endpoint he said he was running on it), but this doesn't seem like a particularly reasonable way of handling it.
Anybody else getting the impression that I'm not about to let this go? Want to double down on their behalf? By all means, do.
Just to keep this perfectly clear: we do not have a system that automatically deletes flagged accounts, and what happened here was not an error on our part.
That's not a decision we made. Anyways: I really don't think we have much more to say without this person's consent to proceed, beyond what was already said: we do not have a system that automatically deletes flagged accounts, and this was not an error.
(What you're describing as our policy is certainly not our policy; these are extraordinarily distinctive circumstances.)