Stating you disagree with an authors view on romance writing in videogames in a feedback forum is not harassment. Again, it seems a certain portion of the fanbase just stating their opinion is labeled as hostile shouting.
Saying that you dislike something, that it makes you feel bad and why you'd like it to be changed is perfectly fine. That's what forums and feedback posts are for. But coming up with theories that the company wants to punish or educating you, that a second/new writer wants to force their narrative on you and that special people were hired just to hurt you stops being simple feedback. And there have been some hurtful things said both about Astarion's and Halsin's writer that I hope they didn't have to read.
Given this "I love AA abusive, please give us more abuse" was not really a talking point until patch 6, it seems disingenuous. Just a fun way for people to stir the pot. I don't even see people saying others are "enjoying AA the wrong way". Just stating their reasons for disagreeing. But I guess if you're part of a very large and excepted fandom, experiencing disagreement could definitely feel intimidating when you're used to others agreeing with you!
Ehm, you assume a lot there, I am mostly a Gale person. So I get told how much my favourite character sucks on a regular basis, thank you very much, sometimes accompanied by images of a severed hand if the platform supports it. Also I don't get the feeling the OP wants to stir any pots. As Jinetemoranco wrote, not everyone enjoys romantic arcs in video games as pure wish-fulfillment, enjoying it as a tragedy is also a valid option. I use enjoy in broader sense here, not as in enjoying something that is purely pleasurable but as something that might move you to tears and break your heart a little. (And still, because this has apparently has to be said as a disclaimer every time, I thought the kisses were ill advised.)