For someone who gets paid to post and earnings are sent through the gambling site (Bitsler) like me, I use a mixer because my local exchange site does not allow BTCs coming from gambling sites (they will suspend my account or close my account) and known HYIPs that's why I am dumbfounded by Bitmixers decision and might look for other alternatives that offers same service with same level of trust earned by Bitmixer.
There are always legitimate uses of such services, but of course nefarious people will also (ab)use them. I don't think there was anything inherently wrong or illegal with bitmixer or other such tumbling services, but of course that wont stop the USG coming after them.
Anyway, so what happens with the signature campaign now? is it still running?
No, of course not. Why would it? Lauda already announced it was closed.
Where does it say anything about Bitmixer?