*It’s pretentious. 😜
Seriously though, I think emoji are a supplement and therefore an asset to written communication. After all, written communication simply can’t replace body language — emoji step in there and transfer additional meaning in an intuitive way. This is primarily true for the classic facial expressions (smileys), while the other emoji symbols are more of a gimmicky nature.
In contrast, a lack of grammar and punctuation removes nuances and makes communication more difficult and ambiguous. When I see formal, written texts from colleagues I also have no doubt that “SMS speak” does bleed into formal writing. Some of them are on the level of fifth-graders, it’s shocking!
Which is why I’m all for thoughtful written communication plus emoji! 🎩👌😌