I just tried on my mom’s Mac (macOS Monterey vers 12.5.1).
Control-click is how you get to the emojis, and, although everything looked like it took when I hit Save (no error messages), it didn’t show up on my profile. In fact, the verbiage I had after where I inserted it is now gone (I know I didn’t delete it.) 
Bottom line: I don’t recommend doing this on a Mac.