From the thread it seems like they’re poking fun at browser vendors adding untrustworthy CAs to their trust store and not removing them even for egregious violations.
Their point is that Honest Achmed is at least as honest as some of the other CAs they’ve allowed in. This issue was closed a few times because Honest Achmed hadn’t completed an external audit. It was reopened each time by users who pointed out that audits were redundant if Achmed quickly issued a tonne of certificates and became too big to remove.
In other words, this issue is an implicit critique of browsers certificate policies.
It was written around the time one of the CAs got dropped for signing certificates they shouldn't. (I wanna say it was DigiNotar, but that was a long time ago)
