I see that he did something similar in the past with the Ideaology project in this thread:
Is Ideaology.io scam or a great opportunity? [
archive]
First, he published a very negative review claiming that the project was too risky and worthless, with an amateur and inexperienced team.
However, after just under a month, he completely changed his story and deleted (or denied) almost all of his claims from the original review, ultimately giving the project a high 8.5/10 rating. Now, I don't know if the owners of the Ideaology project paid for a positive review, and that will be hard to prove unless they publicly admit it themselves, but realistically, what could cause such a drastic change of opinion in such a short time? If you're going to write reviews, at least try to be objective and free of personal biases so you don't have to contradict your own words.
Ideaology (IDEA) IEO, Risky but Profitable! (Updated Dec 22, 2020)
And, according to the date stated, that update was made only a week after Amar Kovacevic from Ideaology
publicly accused them of abuse and blackmail.
So he was playing a tricky game. Reporting projects as scam and then extorting them funds in exchange for a better review while at the same time trying to falsely gain reputation from the forum as someone trying to legitimately expose scam
I will leave my tag as well.