Okay, so there's a LOT of what you just wrote there, and I may not be able to answer everything all at once, especially since I may not understand a lot of it, but I'll do my best to answer your worries.
With Taffy Tales, IF you like a certain kind of content involving NTR, you can go to that option. If you DONT like that sorta thing, then you can avoid it. As it CURRENTLY stands, there really is no cucking/NTRing of MC, minus some embarrassing scenes of Darnell being mean and humiliating him. Nothing sexually humiliating though, nothing overtly h-scene based where MC has to watch someone he likes become the property of Darnell or anybody else.
That's just how it is CURRENTLY, but down the line, who knows, Uber might add the first branching option path where you can choose to be passive and watch or choose to be assertive and stop something you don't like. That's what I imagine it'll be in the future at least.