I don't use a lot of emojis privately but I especially do not use them in a professional environment. I think one of the reasons being that I dislike the aesthetics, which plays into another reason, which is that they "feel" unprofessional. (Although there is probably nothing inherently unprofessional to them, it's basically just a novel way of communicating).

The blog post mentions increased interpretability and adaptability but I think making emojis more professional and aesthetically pleasing "in a professional setting" might be a big step as well.