At first I started the game wanting full corruption of Asuna but now I feel sad for Kirito (frustrated by lack of awareness), especially after losing Yui to Inoda. I just want to break away from Asuna.
Well, this is one of the main mistakes of the authors of modern NTR. A woman's complete indifference to her boyfriend\husband\fiance. The authors think that this way they will achieve more suffering for the main character, and therefore for the player, but it doesn't work that way. As you wrote, this development trend causes irritation towards Asuna, as well as a desire for support and revenge from Kirito.
It's just worth asking the question.
What has a stronger effect on the player - a completely indifferent, hypocritical, deceitful woman or a woman who loves her boyfriend\husband\fiance very much, but still jumps on someone's dick?
Personally, my opinion is the second option. Because it causes a greater emotional response and a feeling of misunderstanding and jealousy.
Fujino, starting with version 0.55, almost completely breaks the line of romance between Asuna and Kirito, and the further it gets, the worse it gets. Numerical values in statistics absolutely do not save the day. Apparently, according to Fujino, when Asuna decided to "take the pressure off" Kirito, it means to completely distance herself from him and remove one of the main emotional elements of the NTR genre - feelings, throwing, lack of determination. Emotions are very important in games that tell a story... especially in games whose main purpose is to evoke emotions. If you analyze, everything that happened after the ingenious "treehouse" seemed to be designed to destroy the atmosphere of the game. I don't understand why Fujino is doing this.
If you focus on beautiful porn again, then this is a very weak reason. At least for me. I'm too old for this shit. I saw how the Internet appeared and developed, I saw almost all kinds of porn that can be.
I've seen things you people wouldn't believe: attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the dark near the Tannhäuser Gate. All those moments will be lost in time, like tears in rain...
( It's a pity that few people will understand this reference.)