On the one hand I respect them for venturing out of the expected norms of their field, if no-one ever tried anything experimental or new within a genre fiction would be terribly boring as a whole - but on the other I also feel it's a shame that it had to happen to this game in particular. I just wanted a dark, power fantasy vampire dating sim with controversial elements sprinkled in, not a sermon on why escapism is bad and there's nothing but cold, empty suffering to show for all of your efforts. It just felt like a bit of a slap in the face to the player.
Oh Lord the end of your post has been sending me, I couldn't stop laughing. Like, Markus runs a fucking sex shop! There is -no- reason why they couldn't have paused, pointed out it wasn't exactly working out as-is, dashed out to buy some vampire lube and then continued when they came back. The way these characters forced themselves through extremely uncomfortable sex made you feel like the world was going to end if it didn't happen right there and then - and the fact it isn't even implied to happen again afterwards all points to it being no fun for everyone involved.
Even in fiction we all have our limits, and 'no lube' is a very fair one to have, lmao. I don't know why half the LI's have such an aversion to getting intimate inside the comfort of a bed. Not everyone is into exhibitionism/nearly getting caught as a kink, even I had to take the druggy dumpster diving experience with a grain of salt - Saorise showing up immediately afterwards didn't exactly help, either.