Yeah, if you ignore what the devs have said in passing and look to the actual content we've gotten from him, I think you see a bigger picture and its not defined by sex.
My guess is on the Bull being referenced with regard to sex so much is because of a number of factors not tied to him specifically: Epler did so much extra work to make sure everyone could romance him, #ridethebull is amazingly catchy, they don't want to spoil anything and so they're just being silly about one of the more "obvious" things with him (not that he's SEX SEX SEX, but that he's the first Qunari LI and he's enormous)
AND he likes sex, of course, but I don't think it's as defining as it might seem if you were reading dev tweets a lot, especially a month or so ago.
I found it off-putting at first, not because I dislike sexual characters, but because I get tired of bi/pan characters having their sex drive be the thing people walk away talking about...but thinking about it, I can see how all those things would contribute.