YES.
The Gay Heretic Episcopalian Bishop is leading people to the wide gate. Is he doing this because he wants company?
Absolutely--you're quite perceptive. Beyond the more general aphorism that "misery loves company," getting others to join you can encourage you by seemingly validating your choice (which avoids the question whether popularity should be the true measure of propriety, or indeed whether "should" has any rightful place in the discussion). Everyone else is doing it, too, why shouldn't I? Of course, this is the whole rationale behind the Gay Pride movement of which Robinson is such a visible and vocal leader.