As correct as you are about this being a game first, porn second for Rem, that's absolutely not the case for the majority of players. Most people would 100% be on board with throwing the game balance off in favor of more porn, but regardless, that's not what the guy you're responding to is saying, nor is it what most people are actively asking for. That guy is completely correct in saying that there's tons of room for adding new side-jobs and whatnot, and he's right. There's several rooms that seem like no-brainer job opportunities like the shop, mess hall, classroom, etc., and there's several places that have doors you never get to enter that have literally unlimited untapped potential.
You can't really blame people for spitballing ideas for possible future DLCs or mods when this game has so much potential on that front. Yes, the game is done, the core game is finished and Remtairy is trying to move on to other things, but the game has fans, and it has untapped potential, and at the moment the only person who has the means, drive, and ability to create new content on the scale fans would like to see is Rem, so of course people are going to be spitballing ideas in their direction.
I get what you're saying about game balance, but chill out, it's not an attack on game balance or something. This is just people who love the game, and want to see more of their favorite type of content in the game, so they talk about the types of content they would like to see.