I believe the part of him being part of the team, what is not so believable to me is him actually having played ark for years. Not in a "famous people aren't human" kind of way, but more in a "ark tends to demand more of someone's time than a normal game to a point I don't see a successful actor being into it and still having a career" way.
I mean, I would still believe it, but I find it hard to believe.