I hear your opinion and I respect it. People are different.
I respectfully disagree though
Context in a scene surprisingly has multiple uses.
1) It can naturally improve the eroticism of a scene type. If one day your character wakes up from bed, and your girlfriend character is giving you a blowjob, the scene has the context of, "I woke up to a blowjob."
If you just unlock a blowjob animation on a bed, it's just a blowjob animation on a bed.
Even if you don't add any dialogue to, "I woke up to a blowjob," I believe the, "I woke up to a blowjob" scenario is much hotter than just the blowjob animation on a bed. The scenes can even be the same and have no dialogue but one would be innately hotter in my opinion than the other.
2) Context is a vessel for character dynamics.
Characters don't stop having personalities as soon as they get bedded. If a scene is missionary, you can make the context of that scene, "woman's first experience." Maybe that scene is more about the man getting the woman wet, seeing her breathe heavily in excitement and nervousness as he slowly inches in, waits for her to calm down as he presses onwards pushing her initial fear and feeling of pain slowly but surely into pleasure.
Or... it could be the 900th time you've had missionary sex.
Instead of her going to bed, she grabs you by the neck and pulls you into bed. Her feet are clutched around your back saying she doesn't want you to pull back, and as you press in, she needed a lot less preperation and is wet in anticipation for the sexual pleasure that she knows is coming.
Same scene. Different context.
3) It's useful for establishing relationship dynamics and changes.
A scene where Killi's being pounded by a mantic from behind changes based on context.
Did Killi get frustrated by the lack of battle going on and decide to ask Lily to cook her up a mantic battle opponent and then lose? The mantic beat Killi, and Lily approaches saying, that she made this specific mantic's battlelust also affect his actual lust. Killi tired and exhausted from fighting at full strength has no power to resist as the hulking mantic pins her to the ground and makes use of her body.
Or....
Killi got frustrated sexually. She keeps buying bigger and bigger dildos and nothing is bringing her the pleasure she wants. She's extremely horny, so she goes and asks Lily to cook her up something special. Lily's mantic is brought to life, and Killi gets near the bed and puts her ass up. The mantic sees this and drives into her as Killi is finally getting what she wants.
Exact same visual imagery.
Killi doggystyled by mantic.
Context of the scene decided who was leading, and could be the deciding factor of erotic preference for some people.