The reason for bitmixer.io's closure has been outlined by themselves here: https://bitcointalk.org/index.php?topic=2042470 As far as I'm aware, Bitcoin tumblers are legal and no such service has been seized (or at least the public is not aware of it). I could be wrong, but logic dictates that that guy is.
That guy is active mainly on illegal markers subreddits, so it could be LSD talking.
I know that mixers are legal, but while they are not illegal yet, it's just a matter of time before they become illegal and in that case BitMixer.io would be the first target. That's probably the reason why the admin decided to stop it while it's safe.
guys, OP can't admit it but they are under duress.
This is as obvious as it gets and this is their form of warrant canary. OP specifically mentioned those honeypot coin alternatives to simultaneously aid law enforcement create new investigations on users that don't catch on, as well as make it obvious as code words for their duress.
OP didn't say Zerocash, which has the optional opaque feature although nobody uses it properly. OP said Zerocoin.
OP didn't say Monero, which would stifle all law enforcement effort. In fact, no mention of cryptonote technology at all.
The incongruency was worded to be obvious to any body here for some time, but simply cannot say anything to reveal the state action against him. So therefore it is my turn to reveal how that works to help you all.
In response to non-disclosable actions by the government, some operators of tech services just shutter the service. This is what you saw with encrypted mail services in the past that weren't decentralized enough to simply ignore government pressure.