The anonymity of sdf.org accounts and VPS/servers are all limited by association through access and payment. Tor is arguably the most anonymous access method for any of them. Excluding login chaining via Tor through botnets and compromised servers, anyway.
If done carefully, using well-mixed Bitcoin is arguably as anonymous as sending cash through the mail. There are ways to screw both up, but also ways to do both with arbitrary overkill.
Anyway, this is cool. I mean, six years is an OK run. But on the other hand, all remote VPS and servers that I setup are just about as anonymous. And yes, it's lots easier now than it was in 2013.
I think it's much easier and safer to send Monero or to convert it to Bitcoin using something like xmr.to than to mix bitcoins, which can be traced back.
