You can turn everything you're saying right back on anybody claiming girls are non virgins, lol. You realize that right? At the end of the day you're making assumptions about the characters, and often ignoring lore. It's "nitpicking" just the same to claim that some girls aren't virgins without evidence.
Your existence in this game is a unique oddity to Sakuya. Remilia has ordered Sakuya to work with you. She threatens to kill you when you first meet and only allows you to live because of Remilia. You think this girl is casually banging dudes in the city? You're not just ignoring her canon lore, you're even ignoring her ingame lore. You've admitted yourself that the player is a walking contradiction that is able to do things normal humans can't, remember? But somehow rando humans that barely have a chance to meet most girls are fucking them, even though the MC struggles with that for months? Wow, sure seems like there are some consistency issues there with the game world.
As I've mentioned, innocent until some shred of evidence is best for default. There are girls that have canon or implied relationships, there are even girls we have confirmed have had kids. Why do you feel the need to stretch so hard to force sex on girls we have zero evidence for, it's just plain bullshit. The best you can come up with is "They interact with humans, so they must have fucked"? Lmao. A lot of humans are interested in other humans and are still virgins, but you think the demons/ghosts/gods and such that are locked away in a fantasy world and have extreme personalities have fucked before just because they have access to some humans in one village? Again, I've already accepted many times that "It's possible", but "possible" shouldn't guarantee things. There is already an option for that in the virginity toggles. I'm asking for an "accurate" toggle so people don't need to fill in the blanks with bullshit.
The virgin/non virgin status being off can straight up conflict with shit in their canon lore and in game lore and cause misconceptions, that's a fact. People end up having to jump through hoops to explain them, much like you're doing. Guess we should just assume all the girls are non virgins because they can access the Human Village, lmao. This isn't a fantasy dating sim with eccentric fantasy races anymore, we need to assume all characters act like real human girls. Let's just ignore everything we know about most these girls to make that a reality.