Maybe he got doxed, deanonymized himself somehow (and therefore had to abandon all his connected identities), got v&, or yeah, died.

None of those are good options, and I seriously doubt the guy got v& unless someone at the NSA decided his time was up, or he went down Epstein style.

Hopefully some puppet version of him re-appears at some point. I also emailed his safe-mail email a few days ago, but nothing.