Instead my main issue with the male romances in BG3 is that I have a hard time seeing my character agreeing to start a relationship with any of them (Gale is staring at the head of his ex at the start of his first romance scene, Halsin starts his romance by saying he doesn’t do relationships, etc.). I haven’t had this issue before with other games I have played that have romances.
I understand that. Staying true to my character is a big part for me as well. Though I also like that my characters can have unexpected developments to their story from aspects of themselves that were maybe hidden before and I can work some things like that into my headcanon. Maybe my character isn't naive and sees through Astarion's initial trickery and subterfuge, and they would normally instantly turn them down. But given the circumstances they decide to play along just to learn more and then accidentally grow too close eventually. But if I dislike a character and don't find anything interesting about them, then I can't work with that. That's a matter of personal taste so we will have different feelings around what we can and cannot work with.