How did this escape from mrm

Why do people keep saying that idk the context

so there’s a site called myreadingmanga aka mrm and it’s mostly filled with just smutty works and ppl just say that when the works from mrm get uploaded here

Mangago is considered tame compared to mrm content cus whats in there is either fullblown kink porn or just straight up gore. The thing is mrm is way more smaller reader than mangago so its just like an insiden joke.