Emoji + SEO = NITRO?

Question

Search Engine Optimization

Everyone, GOOD!
I began to notice the use of emoji in H1, H2, H3, title, alt tags on a number of sites, their output in Google search results in the form of the same UTF-8 codes and display in the browser as images ("icons").
Hence the questions:
1. Does anyone use (or only plan to) use Emoji in SEO?
2. How justified is this and does it not have a negative effect on promotion?
In advance, thank you all!

Answer 1

Hello.
Conducted an experiment on the site with about 100k uniques per day from organics. Added emoji to title and description. This is surprising, but according to the data of the Google Search Console, for more than two months of observation, at least some significant changes in CTR were not observed for better or for worse.
Sports website.
I think it can greatly affect children's topics.