Preventing people from "communicating those concepts" is your strawman, not the goal of the Unicode org. Regardless of whatever lip service they might give to "This little thing, plus Santa's naughty list, will magically make all the children nice" fantasies. They are a big org, doing normal big org things, and trying to dodge the Bad PR spotlight.
But glancing at your karma - are you contributing to a platform (HN) which outlaws wrongspeak, when you should start truly living your values?
Ugh, I really don't care for their selection process. Emoji should be open source even though that means there will be nazi emoji and porn emoji, it should be up to the user which ones they use. The selection committee seems like a very arbitrary group and many of their decisions seem equally arbitrary.
I don't know if you've ever used even remotely popular slack instances, but I'd say the flood of new reactions people are constantly adding on the slack instances (including corporate ones) I've been on is not something I'd want to see repeated for emojis.
Useful feature though, but just for limited audiences (not just Slack of course, Mattermost does this too). We have a grammar Nazi flag, a rubber duck, and an animated dancing banana.
This one is a stylised black square 'G' rotate 45° on a white circle in a red field. Definitely off-colour dev humour for internal use; but that has its place.
The list of past proposals is here: https://www.unicode.org/emoji/emoji-proposals-status.html Most have been declined.