From what we found out in ch39, it sounds like the genemod thing is going to go from a "oh btw, there's a reason everyone has great tits" to a pretty important bit of the plot.
There's actually a lot of that in the game. Something starts out looking like porno-game silliness (CJ being dumb, the big meme guy in the sky, the girl-pretending-to-be-a-boy, girls being more attracted to the MC than makes sense, etc) that then turn out to have very, very deeply thought out reasons for them that are slowly being revealed over time.