I mean, you said it yourself, most of them are retired or VAs, who is not as worshipped as active idols. Here she is still an active one, and even in her prime no less. The manager outright said that the only reason he was allowed to be near her was because he wouldn’t touch her, if they are in a relationship the idol agency would immediately step in, if not forcing them to break up then it would be a mountain of “not to do list”.
I picked a example of someone that is active, her last concert was
Nana Mizuki Live Parade 2023.
The difference of a idol and a celebrity is that Idols image is of someone close as a celebrity is someone outside reach, its a manufactured image and this would end up being a very long conversation because there are many types, including AV idols that needless to say nobody would think they are virgins.
I dont think I mentioned this but one thing to remember is Japanese society is very private, this means you rarely see anything about the private life of what we call "public figures" unless they made it public, a reason for that is Japanese media is pretty much concentrated into conglomerates, this means any scandal is not only something they wont necessary want to cover to begin but also very easy to simply make it go away due to contacts such as what Johnny & Associates (a male idol company) have considering how they dodge then.
Another thing is as people love to focus on the "crazy fan" notion they ignore reality, idols (especially female ones) start very young and their image is maintained by their agency meaning they ended up losing control over aspects of their own life (such as hobbies, musical tastes, etc) in order for their image to be maintained, you very rarely see that aspect being shown because ... well, said conglomerates run all type of media and the high turn rate because its like sports, not everyone that plays collage goes into the big leagues.
The point I was trying to do is that the whole "they cannot date because she is a idol and their fans would start WWIII with weaponized incel gamer energy" is a tired trope (and I
hate using that word) long been used and its used just to keep their relationship from progressing, in reality she would be far too busy to even talk to him to begin with, as I said what I dislike is the use of that stereotype were most of its use is to stall the natural progression of their relationship and this manga does this a lot, the only couple were progress actually happened was Prez and Sensei, the rest is just repetition.
Now if I want to blame then, one is because she is another airhead unable to understand her own feelings (its like the 3rd now? we have Kouhai and I think there is another but could be wrong) and second because he decided to be a freaking Simp, you could easily replace "Idol" for "Livestreamer" (well not because Livestreamers can be Idols too) and nothing would really change.
But this is what happens when you have one page every week on Twitter and you try to make a story out of it, expecially when so many characters havent been added to the manga (like Sada-Chan) I guess because this is now a multimedia project and we have to think of the anime costs dont we? Never mind the whole aspect of the Twitter pages was the diferent Tawara and not just a few, I know I am ranting now and I will stop.