Yeah you're right, it may have more consequences down the line.
Implementation wise I don't think it's really that bad. It makes sense as a route. There are really only 2 routes, love and lust. All you do to follow it is not choose the pervy options instead taking a more romantic approach. It's nowhere near as counterintuitive as some other "secret" routes I've seen from other games. Like the secret Alexis path in Intertwined. I'd never have found that shit without a walkthrough explaining exactly how to do it.
Well, I'll be frank I don't find the whole "this game did it worse" much of an argument. You say there's only two routes, but if that is genuinely the case, that makes the entire mechanism for tabulating "love/lust" irrelevant. Why would you bother allowing a mix in the first place?
I and I believe most players, will priortise what they'd authentically choose in the scenario presented and occasionally that which they find most compelling, whether that be amusing or titillating etc. Not wholly bind themselves to a single metric.
Having some measure of consequence for a route is necessary to make it feel impactful. To have a route fully block off any player input for a good chunk of the game? Just a weak design choice, I think is fair to say.
