The proxies are necessarily run outside of Iran, as Signal is blocked inside of Iran. I think the (tenuous) argument is that the government could see that user X is connecting to proxy host Y (outside of Iran), and then themselves connect to proxy host Y to verify it's a Signal proxy, and then take action (including potential violence) against user X for connecting to it (and presumably block further connections from within Iran to proxy host Y).

It's overblown, I think.

> Both the Signal team and this anti-censorship BBS strive towards the same values, and the only thing drama and indignation does is to crack and weaken the effect of the community as a whole.

This is precisely why I'm so curious about why this happened. It's easy to dismiss it as simple douchebaggery, but at least one of the accounts harassing Moxie on twitter about it have the classic hallmarks of sockpuppets, and the whole over-the-top PGP signing thing (and opening of multiple issues, and seeking press) makes me think this is a bit more of a coordinated smear campaign.