WTF!!!! Did Osomatsu-san do!!!!!

I was in MRM (yes I know I'm in rock bottom) like aren't they like triple twins!
Like pure incest but some reason MRM has tons of them. Like I was young it's either Jojo or some anime. But some reason when the reboot show up there's was tons of Osomatau-san dj roam about. Even some of my favorite Mangaka made some of them. Like what did they do to trigger this?!? (Yes I didn't watch the anime not because of this. It's because I'm not interested)