You keep putting out dumb ideas. It doesn't matter if the player feels jealous because the player isn't the MC. This isn't a game where the MC is a blank slate you can pretend is you. He is a developed character. The reader feeling jealous is not NTR.
Why do you think the NTR haters keep crying NTR? Because they feel jealous!
Also, don't agree with your "not a blank slate" comment.
Neither F nor Dee are very deep and interesting characters, neither is the story.
As such, this game is very good for self-insertion.
This is not a dig against the game because it's obviously very successful.
Again, you are treating your opinion as fact, when the facts say something completely different. You really need to learn the difference between fact and opinion.
Bullshit. The fact is that the F95Zone definition of NTR does not define whether the MC or the player should feel jealous. Therefore both are completely valid. And, that, my friend, is a fact.
I'm trying to wrap my head around the idea that an actual human person would get jealous over what one collection of pixels "does" with another collection of pixels. I am aware that, sadly, there actually are people who do. I just truly cannot understand it.
It's called self-insertion...
Whether that's a good idea or not, is an entirely different discussion.
If you're playing a game (not this one) and like to pretend that one of your love interests is your sister, does the game need an incest tag? Even if the writer insists that she's not related to you in any way?
No? Then a given player's feelings of jealousy aren't netorare, either. And they certainly aren't taggable by F95's rules.
Isn't that the entire point of the landlady / roommate trope? That you can "pretend" it's incest while the writer can claim plausible deniability?
Obviously such games are, in fact, incest.
There are, very rarely, games where the "mom" / "sis" characters are revealed as not, in fact, related to the MC for story purposes (as opposed to Patreon pressure). "Sins of the Father" is a very good example of this. In my opinion (there we go again), this is fine, since it means that the creator actually has some creative ideas rather than rehashing the tropes with slightly different characters. But in most of such cases, there is backlash from the community.