I mean, ICP’s cultural impact metastasizing is certainly part of it.
But also clown is a strong aesthetic, and we’re detached enough from unironic clowns being a fairly common thing that it can be repurposed for new ideas. Not many people hiring party clowns and most remaining circuses have moved on from clowns as a central element.
“Huh? The people I’m not directly targeting don’t approve of my actions targeting a group? It must secretly be the targeted group making them not like me! I don’t experience empathy, ergo it is impossible for anyone else to experience it.”