Okay, since you've gotten so much of your head wrapped in boobs, let me remind you I'm not a stormfag.

The joke is that they infect/take over everything, and this time, it was a stereotype. Aka, cultural appropriation, that little bullshit they love to spout. The similarities between their actions here and the jewish stereotype was funny to me. I can see how someone without a sense of humor wouldn't get that.