This question already has an answer here:
This question about Franc Ross' character on Firefly appears to have received an answer from Franc Ross himself. The problem is that they've offered no other evidence to support their contention, nor does their user account give any indication that they're the real Franc Ross.
The answer, in and of itself is very low quality and from any other user would merit downvoting and probably deletion. Obviously if it's from the actor, then it's actually a very good answer from a primary source.
Should we assume that someone who claims to be celebrity is accepted as such until proven otherwise? And if not, then what proof would be considered acceptable?