I think right now for search engines there are no implications.
It is more a thing for humans to grab attention.
The only kind of disadvantage I can see is that some people find it not very professional. For me, I would say it depends on the context where you post. Here on dev.to I think it is a good thing. For example on linked in, I would not do it.
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What's advantages and disadvantages impact about adding emoticon on title, subtitle, description, or main article?
Good question.
I think right now for search engines there are no implications.
It is more a thing for humans to grab attention.
The only kind of disadvantage I can see is that some people find it not very professional. For me, I would say it depends on the context where you post. Here on dev.to I think it is a good thing. For example on linked in, I would not do it.