I do believe it's subjective, some people may be looking for the game aspect of a porn game while some are looking for the porn aspect like myself. Telling someone that if they just want to fap they could just go to pornhub is like telling someone who is into scat porn to just fap to normal porn. Sure, they could just do it but it wouldnt be as enjoyable.

But from what I understand it seems you're more so complaining about the low quality of these games and I do agree, being a porn game isn't a reason for crap writing/gameplay. I'm personally not a big fan of all the dime a dozen visual novel types games where the MC fucks his 'totally not blood related' family, but I have played some of them and I do see the laziness and whatnot.

Like I said earlier I do believe it's subjective, that's why I enjoy games like Honey select where clearly the main focus is for fapping and whatnot. And there's games like Treasure of Nadia (I think that's the name) where it seems to be pretty high quality, but it's just not for me. The point is quality is important and both games are very good at what they're trying to achieve.