I know a few teachers, the "cringy and bad" is the goal, not a mistake. It's apparently quite therapeutic watching the "cool kids" squirm. How bad can you make them, but not make it obvious what you're doing?
The fact that it also helps a lot of kids remember it is almost just a bonus.
I've got a friend who was slightly too old when the word yeet became popular. He decided he would use it confidently, often, and incorrect. He still does.
He's excited to embarrass his kids by doing that with whatever the current slang is when they are 12 or 13.