Well you can see the screenshot from Telegram, in which he asks for money to provide an 8+ review instead of 6.4 or whatever.
Yeah I see it, but that doesn't look like a threat or extortion scam to me.
We all know how most rating websites work, you pay more and you get higher rankings, nothing new about that.
Yes, but when OP declined or ignore the offer they published negative reviews of the project, will they publish that review if the project did get their service, they have a lot of projects that they've reviewed did they do the same, offering their service and when they declined they publish bad feedbacks.
They have a lot of explaining to do, or people will doubt their reviews if it's coming from extortion or if these projects really believe in their service.