This is not new when scammers using my profile but their ether Addrees! Sometimes they get paid cause manager fail to catch them but if found, then reject both user from the project, which is painful. Sometimes team force manager to create new bounty rules! Like "user must leave comment on telegram & annonucment thread" that's totally illegal and crime of thread bumping. User get red trust for follow those rules.
but if users have to leave comments on telegram & announcement threads, I think this is too good in order to prevent scammers who often steal data from other bounty participants.
I think it's not just to catch scammers, but to make the group look active so it can attract lots of investors,
and actually the number of participants is not the reason BM fail in managing as long as the team that is holding the campaign anticipates every bad thing that will happen, this is something that must be done for the project to be successful.