They’re referring to the term “ricing” that is used in the meme. In the car modding world, “ricing” is used as a pejorative to refer to the tricked out anime-wrapped cars, usually driven by Asian dudes or weebs. If a car is wrapped in anime characters and/or egirls, it has been “riced” and is referred to as a “ricer” It’s… Well… It’s not a polite term.

It comes from the old school rivalry between American muscle cars (which were big and heavy, but had good top speeds so they were popular for drag racing,) and Japanese cars (which tended to favor agility, tight handling, and good acceleration.) At the time, tricked out cars were popular among Japanese car enthusiasts, so the term started getting used by boomers to refer to Japanese people who mod cars. Then younger generations heard it, assumed it was referring to the cars (not the drivers) and it has stuck around as a rude way to refer to heavily modded Asian cars.

It doesn’t hold the same sort of derogatory connotations in the Unix world, largely because most users aren’t even aware of where it comes from. It just refers to a highly customized Unix setup.