There's a difference between constructive criticism and just saying you hate him.
Halsin's got issues, we all know it. Offering solutions to those issues is a lot more productive and doesn't derail a conversation.
His issue is, that he doubles down on class and race and has nothing to offer. He has no storyline in act 3, that can be fixed. He has his creepy behavior, that sure, but I still think, it was wrong to pander to the simp crowd, instead of giving us an actual interesting companion.
But if you want solutions: Minthara at least has a motivation to help us - keeping her free will. They could easily have Halsin tadpoled at the goblin camp - which would have also be a great explanation for why an archdruid is so low level and powerless. Give him a storyline in act 3 - he already cares about the refugees, why not tie the Open Hand murder quest, where taht refugee was blamed and the rigged toy quest to him, which would have him involved into the Bhaal storyline - bang connection to main story. Together with the tadpole and without the creepiness, he would still be the most boring companion, but at least somewhat bearable.
