I don't know how the support looked like the day you created this thread, but "everyone" supporting the flags is simply wrong. They currently have only BitcoinGirl.Club from the DT club that supports them together with a few non-DT members.
If we take into account that the flags reference a post from April 19, and we read the neutral tag he left on May 6, I give even less weight to the flags.
To my knowledge there are two accusation against Rollbit but they are not co-operating with clients. The accusation could be right or wrong. Before playing in Rollbit consider checking the development of both cases.