Back when I was first becoming an adminsys, colour in the terminal was pretty rare. Emoji's certainly didn't exist even as a concept in the west at that point either.
However, a senior sysadmin on my team said "when you're writing your management scripts, remember to add colour codes if things are good or if they are not good. Managers freaking love that". He was incredibly right, and though the development team avoided colour codes (they can mess with things like stdout redirection) the admin team leaned into them- and the managers lapped it up like crazy.
"Red bad" is a universal language in our culture, and it makes managers feel like they understand, I guess.