I think there is truth in your allegation, I tried seeking proof on how genuine is Greenbit by posting the link you dropped, my message was deleted severally when posting the link, I finally dropped another form of scam alert message in the group without link and within few seconds it was deleted again before they finally kicked me out of the telegram group with about 17.7k members.
It is such an unfortunate situation.
I think there shouldn't be further proof to convince me that Greenbit is scam. I regret all the time and effort I made in promoting their scam project.
Am going back to delete all my social media work as well as article.
God have mercy on them.