Probably it just my unfair prejudice, but I feel in Porn games developer community, they target the deadline first then quality follows.
Perhaps were you lucky, but deadline is what matter in a lot of jobs, and it matter even more when you are independent. Whatever the quality of their production, if they miss too many deadlines, they'll also loose half of their pledges.
You'll probably have difficulty to find clients if the quality of your production isn't good, but you'll surely have a real hard time to find clients if you never stick to your deadlines. I know it, I was independent for twenty years. It was pretty hard at first, I did really great works, too great works... Whatever they decided or changed in the future, my code would still works. But because of this I almost never met a deadline. It's only after two years that I understand that, in the end, only the client's satisfaction matter. And what the client want is something which works as expected and is done on time... I stopped making piece of art, met almost all the deadline, and never ever had hard time to find clients. It was a compromise and that's what they wanted.
It's the same here. There's some shitty creators who make poor looking games, but earn a lot of money and have almost fanatics supporters, just because they never missed a single deadline. And at the opposite, creators who stick to quality have a real hard time to earn more than $200/month, because they can't reach the deadline most of the time ; or when they do, the update is small.
Mostly people don't care about the quality of the sex scenes. Is it a good or bad thing, I don't know, it's just like that. Just look at the actual result, 65% think that it's not a big deal, so creators tend to follow the trend, especially if it help them earn more money.
If deadline short, make the content as it is. If the deadline longer, then you tried to add more details. I've been debate with someone in F95 before about this and he called me being spoiled kid, I just laugh about it.
I don't want to be harsh, nor insult you, but if I should judge you by your position on this subject, I would probably have said the same ; just said it in a more polite way.
I don't know if you are one or not, and it's not my concern anyway, but your position on this subject seem to be one of someone who can't stand little imperfections. It's your right, I know that myself I tend to be triggered by bad code... but I mostly keep it for me. I learned the hard way that life's really too short to be bothered by this kind of things ; I see the code, internally yell in terror, then pass to something else.
Doing bad code, making bad sex scenes, is what the creator of the game do. Perhaps on purpose because he's lazy, perhaps because he can't do better. I'm not someone important enough to judge him on this, nor to try to change this. I helped some of them, will help more in the future, but in the end it's their choice, and it not my role to judge them for this.
This said, I understand your position, it's just that I think that you make a too big problem out of this.
Anyways, before ended this post, once LoP (Lesson of Passion) was leading porn games developer before. But then they became lazy or lack of creativity and not having significant improvement over the year and they loosing player base.
Honestly, I never liked their production. Even back at their great time, I always found them lazy and rushed. The CG weren't bad, but that's all they had for them and it's far to be enough for me.
This said, we don't look at the same things when we look at a game ; you look at the 3D, I look at the code/user interface. So, that we don't have the same judgement isn't surprising.
The Porn Industry are blooming and if today developers not sticking their reputation through high quality content, they will be forgotten and begone.
Perhaps that they just don't care this much. For most of them, it's a passion which something also lead to a living. I think that, as long as they can continue to do their passion, the other aspects don't mater for them. Of course, it's great to be able to live doing your passion, but that's not the point when it come to passion.
There's a lot of people who have a passion and dedicate all their free time to it, without a single chance to make a living from it. Patreon have made it possible for adult games creator to earn money doing their passion, it's the only difference.
Real world is unfair. Look that game, The Family Secret by Aorrta. Just a very short content, but strive to be perfect. Only for 1 short "demo", his thread already visited +400k time. When talented 3D artist & story writer or Porn movie maker saw the opportunity of this community, they will come in fierce, burying old developers who didn't comply to quality content.
Honestly, I dislike this game. It's visually great, but boring as hell and completely impersonal.