the answer is no , the marketing and fandom probably over sexualise it though making it seem its all about sex.
If we break down a couple of romances you get big bits of nothingness which falls into the story arc of that character
Astarion will come on to you super early sometimes even before you've even spoke to priestess gut which is like the 5th thing you do , you get scene number 2 fade to black shortly after then nothing until you trigger either araj or Yurgir near the end of act 2 then nothing unless you complete his ascension as the cemetery scene is fully clothed.
Gale: he has his freak out super early if you kiss wyll in early act 2 and you hadn't even realised you'd triggered Gale's romance status " the weave" threw me a fast ball and one of my games has no romance what so ever even at very high with all thanks to Gale putting me off and I like Gale . his waterdeep date is sweet the astral sex umm not sure what to think there , the bed in the woods all fully clothed .
Shadowheart so far I've just triggered the first scene it's a mild chat and good morning kiss .
Lae'zel is a fight and a kiss on her first trigger.
Halsin should of been utilised as a romance choice once you save the grove because leaving him till act 3 seems like he's making up for lost time.
I know the fandom want more and I know large number of the Astarion fans are throwing a hissy fit with the latest patch including me AAstarion was my evil choice from the start of my durge run I'm beyond unhappy that my evil will be Bhaals chosen is looking like a scared sex doll at his hands I am fine with the aggressiveness but not that submission narrative forced on me by animators.
I am all for adding a bit more of romance or adding in a few extra tidbits I'm pleased that the new added lines to Gortash with Durge makes it an interesting bit of bait and the Durge X Gortash fans scream for joy though we'd love to actually see it animated.
So No it's not over sexualised there is plenty of vacuous space between romance scenes and if you hadn't hooked up at act 2 with anyone you're forever alone unless you take the one offs or Halsin. I'd rather see a second chance hook up party in act 2 as I want to see the others personal arcs but 35 save spaces suck.
