Google's John Mueller is not a fan of emojis in the Google search results - at least for the most part. He said, in some cases, he finds them to be unprofessional. This is his personal opinion, not the opinion of Google as a company, but he said it nevertheless.
John said this on Twitter in response to a snippet with lots of emojis. He said "You can do a lot of things -- but it doesn't mean that people will go to your site more, or that they'll convert better. Personally, I find this kind of snippet comes across quite unprofessional, but maybe users in your country disagree. Test results beat Twitter opinions"
You can do a lot of things -- but it doesn't mean that people will go to your site more, or that they'll convert better. Personally, I find this kind of snippet comes across quite unprofessional, but maybe users in your country disagree. Test results beat Twitter opinions :)
— 🍌 John 🍌 (@JohnMu) May 4, 2020
I don't think I disagree with him but emojis in snippets do catch your eye balls.
Forum discussion at Twitter.