Hm, I'd also say that even if you interpret the relationship between the PC and AA in the darkest way possible, he was previously still trying hold up the pretence of a romantic relationship, so that the sinister implications were more between the lines than on the cover. That nuance got lost in the new kiss animations. Especially considering that they are all public.
On the topic of forcing emotions on to the player character, the reverse can also be problematic. In the case of Spawn Astarion I think much of the issues stem from the PC being as emotional as a lonely brick on a cold winter day.
