Yes, that gives us enough cue to stay away from that mixer at this time until they might prove that they've no links with RoyalMix. I also agree with dkbit98's suggestion and also believe that others should try to follow his advice for their own safety.
Someone just posted in forum about finding another bug flaw with jokermix, so whoever developed and worked on royalmix and jokermix is an amateur at best.
I can only imagine what happens with customers data and information collected, like IP addresses, connection between BTC addresses, etc.
People should use mixers only with Tor if possible.