If your memes are too spicy you'll get HR try to turn a critique of something being bad or underfunded into a personal attack on people that put a lot of effort into something no matter how broken it is. They'll pull strings and you'll have to speak with your manager about it and even if they agree it wasn't a personal attack, they'll push you into not doing it again and just lay low under their radar. It's not the usual though, so maybe it only happens if someone feels attacked and complains to HR about it?

Memegen is something that HR wants gone, but knows it cannot afford to take away as they already made Google a worse place to work at during the past 10 years. They already sort of hijacked it and took control of it.