If they don't then how about tagging them since we have a warning post now that clearly shows that they can not have an excuse for it anymore.
On yobit campaign, some participants were tagged by suchmoon and if I'm correct, all of these were neutral. I think that's the best approach here too. Both yobit and 1xbit are same. They are selectively scamming people and/or scamming through so called blockchain less project.