I took a look at some random pages in that thread searching if Wapinter wrote posts and engaged the community in discussion after creating the OP. And he actually did. So he wasn't just a bounty manager, but someone who had a vested interest in seeing that project succeed or he was paid to maintain that thread. In either case, there is a connection between him and the project, which was bigger than someone just being employed to create the opening post. Have you contacted him and asked him to comment?
wonder how you can keep this member with so many negative reviews since 2019! (only spam scams since 2019!)
That's because scams are not moderated on Bitcointalk and scammers don't get banned. The community tags them and issues negative feedback, and it's up to the forum users to research and decide for themselves who they want to trust and who not.