Probably because suchmoon doesn't know who you are and doesn't find your trust feedback relevant or does not want to see your sent trust feedback, which are all positive without reference links btw.

As for the flag, it should be created only if you suspect that person might steal your funds or you will lose funds when dealing with flagged account. Moron or not, making very bad connections based on "they distrusted me on the same week so they could be alt accounts" or whatever Timelord2067 wanted to say in that thread is not good reason to flag him so I won't support it.