Precisely.
Cheap way of making 'replayability' through forced game over hard lockouts.
Good devs give you a myriad of scenarios, with a myriad of player choices, which lead to different encounters, and perhaps even outcomes, but without ever hardlocking you out of things, or quietly letting you go in dead end gameplay territory without ever giving you an off ramp.
Bad game design, is where without warning, you are forced in to those things, JUST for wanting to experience the CONTENT of the game. Then they lazily say 'its not that kind of game' or 'just be a good person then if you want X content'.
Tragically appalling design.
That said, it is fortunate this game is free. I will not get the hours of my life I spent on this garbage back, but at least I did not pay these people for this level of rot.
They are dead set on it being the way they want it to be, their playerbase be damned, so I suspect as wise as your suggestion is, they will not care to implement such at all, because they obviously have very set ideas on morality.... yet surprisingly make a porn game.... but that aside.... it means that in their very immature black and white world view, kinky perverted carnal things, fetishes, and what not, are 'Bad'... and vanilla, wholesome, romantic love, and the sexual relationships from that are 'Good' and THAT is how you are meant to experience the game to get all content.
They've obviously written the emotional beat of the story based on this, and since all devs want players to experience their story... most have a far higher opinion of it than the rest of the world, because it is their baby... then I doubt players can expect anything which might actually allow them to experience the game any other way than the devs preordained 'Right' way.