It also seems to me that he is too pathetic, at least until now, and he doesn't even do Zack any honor. If he didn't prevail over Felix, he would speak very badly of him. I have played other games where the cuck at least excels in some aspect and where he makes it difficult, in this case it was all due to Sophie's insecurities and guilt.
Yeah, I mean, it's a challenge to write a sympathetic and even vaguely realistic cuck when he doesn't know what's going on. It's one thing in a comedy game- I forget the name of it, but there's a game here where the FMC is a foxgirl who rides every dick she sees while the MMC is clueless, but it's played for laughs and works- but another thing in a serious game.
Generally I think serious NTR is more engaging when the cuck is realistic, even if he's not always sympathetic. And that's easier to do if he knows at least some of what's going on. If he's supposed to be the player's POV, he can't be an idiot, right? But in a game like this where he's not watching her slide away from him, it's happening completely behind his back, at some point the devs have backed themselves into a corner and have to write him as dumb as a box of rocks.
For my taste, the devs missed with both the MC's as this game has gone along. And again, it's the challenge of writing a game where the MMC never has any idea of what's happening. At some point, she's just awful and he's better off without her. And at some point, he's just too hard to sympathize with.
But don't hope for less cluelessness. It is what it is now- him figuring it out is the end game, so her corruption has to be complete first.