I mean it sounds crazy but honestly I would use it. There's been more than a few times I've typed a message in haste and hit the wrong emoji. My keyboard already ranks them by recently used and somehow does some context matching, so current technology isn't even too far off from that idea.
On the other hand some of those are silly. "Emoticon Autocorrect"
Well, not every crazy billionaire can be as good as Musk.