I'd venture a guess that the issue they have is with the fact that the poster ONLY posts about their product and nothing else. I can see someone being annoyed that a community member is only using the platform to hawk their project and not providing any value to the platform otherwise. FWIW, I'm making no value judgement here, just observing the likely friction.

Edit: Just to be clear, the poster _literally_ only ever posts about their product and only comments on their own product posts.