Indeed.. and doesn't deserve engagement as that's what trolls and scammers looking for.

Exactly. This is an obvious imposter account and it was reported as such via standard Nostr reporting events. There are many such cases and Primal filters them out. Nobody wants to get a dm from Dorsey asking how your trade is going. Makes you question the motives of those who are jumping on this opportunity to fud Primal.

users decide who is an impostor or a scammer

You're making decisions for your users. That's called content moderation. Like making 2nd level WoT a "product decision". It's not for Primal to set these things by default