As a moderator of YC’s forum, you have a conflict of interest. That’s an objective fact.
Saying there is a conflict of interest is not saying that you actually feel conflicting motives. I’m not casting any doubt on that. The mere appearance of a conflict is sufficient, in typical circumstances where legal definitions are required.
Recognizing that the (appearance of) a conflict of interest exists and respecting it would go a heck of a lot further in garnering trust, IMHO.