To me it is more a question of how dynamic the relationship interactions really are in play.
Time after time, video game "relationships" are these choose-your-own-adventure style games of connect the dots that end in the "requisite" sex scene. They are as formulaic and cringe worthy as they come. Nudity itself isn't the issue, centrally, but it is indicative of the patterns we've seen in games in the past that send questionable vibes. Add to that Larian's generally tongue in cheek way of approaching everything, it is difficult to imagine what an actually seriously approached relationship might look like from them.
Sex doesn't have to be explicit to be meaningful in a narrative. It doesn't even have to be present, necessarily, as there is an entire literary function called allusion that can often do a better job of reflecting the interpersonal emotions involved in the intercourse than "show and tell".
This was the first update that gave me real pause about the game, but I am still looking forward to seeing how this is managed.