I don't limit my decision of why I think BG3 is oversexualized to only the game itself but also to the marketing campaign, design, and the customers Larian wanted to attract with it.
Larian heavily pushed sex as primary marketing ploy, it designed the companions to be sex and wish fulfilment first, similar to how Hoyoverse games like Genshin Impact and other waifu collectors are designed, with an actual rpg story being an afterthought in case they have still time (for Halsin and Wyll apparently not).
And it worked and attracted exactly that crowed who, because most of them lack any real rpg experience think BG3 is revolutionary, ignore all the mechanical story problems, the core disciplines of an rpg, BG3 has and spend all their time with romance fanfiction and their number one priority are not mechanical or story problems but getting more kissing scenes. And that despite the actual romance and also scenes in BG3 being low quality as people pointed out. And Larian is just too happy to keep the sex hype going.
