Yeah, this whole situation is a total circus. Totally agree with you on the suspicious newbies. All three accounts claiming losses are brand new (or accounts that haven't been active for a long time). Doesn't mean they're lying, but it definitely raises eyebrows.
And the alleged hacker? Targeting specific users with an XSS attack, but somehow none of the regulars on the forum noticed anything fishy? Come on. Where are all the high rollers and experienced FreeBitco users? If it were a real exploit, you'd think at least some experienced users would have gotten caught in the net.
The whole thing feels more like a weird attempt to spread FUD about FreeBitco.in.
Stop replying to them and don't feed the troll.
Can we do it?
It is not good to assume all scam accusations from newbie accounts are invalid but if their accusations don't have attached proofs, big red flags that their accusations have high probability of invalid.