There actually is use for them: If you push your stats too high and one-shot enemies lust bars, you can't put them into lust stances (where you get the NSFW sprites) and submit for some specific scenes (mostly bottom scenes so if you're exclusively a top then I guess that doesn't apply).
There's also an event where you can get thrown in Northcrest jail for having too low Agility when stealing from the random market event with two sex scenes available there (blowing Booner and bribing the guard).
But yeah, Hyao's a good boy who doesn't lock cheats behind a paywall because he knows his game can be extremely grindy and he knows that's not for everyone.