Of course it would be foolish to assume that Larian is going to abandon the massive impact that fan interaction with romance and sex in the form of fanart, fan fiction and discussions had on the wider appeal for the game.
That doesn't mean that they are completely blind or oblivious to the fact that they need a solid game underneath to sustain it. Most people, even gooners, are not going to grind through hours of boring writing and frustrating encounters and game mechanics for a few minutes of smut. People were perhaps drawn in by hearing about the sexy elf vampire, but they got into the story and learned to enjoy the mechanics and character progression of a pretty deep crpg for a casual gamer, because those things were solid, engaging and fun.
As someone who enjoy the more tactical and classic crpg mechanics, I didn't feel like the developers abandoned me to exclusively cater to a different audience. There were things that was certainly aimed at other audiences for sure, but also stuff like honor mode for those of us who wanted more strategic gameplay to sink our teeth into. The fact that every decision they made was not made with my specific tastes and interests in mind does not mean that I was ignored, just that other audiences were also included.
I see it differently.
BG3 had and still has some massive problems. The initial state had many bugs, the evil path was practically nonexistant at release it has many plot holes and leftover artifacts from when Larian rewrote the story in the last minute and the writing is at best average when you compare it to for example the Owlcat games. Several mechanics like trading and party control were and still are pretty bad and Larian didn't even bother to add an epilogue.
Together with the already mentioned lack of diversity among companions and their rather bland and "romance ready" personalities.
Yet it was an instant and massive success, not only because of the name BG but also in large parts because it attracted people with bear sex and waifu like companions. So the priorities were not really on the core parts of RPGs, be it mechanics or story.
Sure, Larian could decide that despite not being the main reason for BG3s success to heavily invest in mechanics, story and writing. Or they can double down on what made BG3 successful and only invest in the other parts till they are "good enough"
DOS2 had similar problems and there, instead of adding more romance content, Larian reworked the last act to improve it.
Only that for BG3 the priorities for post game support were clearly different to match the expectations of the large group of new players that were drawn in by bear sex. And they will have similar expectations for Divinity, especially when you consider the even here the first threads that sprung up were about having equally or more smut than BG3.
