My personal take:
moaning sounds are a boner killer in any VN I played so far. They just sound artificial and don’t fit the voice I had in my head for certain characters. One of the reason I always deactivate music/sounds as soon as I start a VN.
Also don't like moaning sounds - they mostly sound fake af.
Since we are on the topic of sex sounds. I like sex sounds but I do dislike moaning
The moaning sound during the Amber scene is actually from a real person, and it's not like you can estimate the voice clearly from it imo, but I do understand that it's not for everybody. So maybe an extra slider in the options menu for "voice/moaning" sounds which can be turned down without loosing the other sounds like the normal sex sounds?I like moans and the faker they sound the better. Brings me back to my teenage years watching hentai on redtube and it totally helps me get off faster and easier too. Even just the default Illusion moaning sounds are peak.
Since they're people who like them and others who don't this might be the best option.