By visiting their ann thread users who replies looks like has a team of ann bumping service, most of them have the same activity and post counts, while visiting their post history most or all of their replies posted on ann threads.
That's why any project who hired such ann bumping service should not be trusted, and people must stay away from joining or participating them in any way.
Awareness is a big key if we want to save ourselves from these scammers, they are employing a lot of methods to get attention, we know that bumping is one method to get attention, but how about newbies who thought that these comments are real testimonials and support, newbies will really have a hard time finding the right way.