I also find fully rendered/colored emojis distracting even in repo readmes because I feel they give off a casual chat messaging vibe, since before colored emojis became part of Unicode proper they were exclusively used for chat messengers.
There's a Unicode sequence that tries to use a monochrome glyph instead if it's supported which I prefer as it's more in keeping with the rest of the text (though an issue with some of those variants is legibility at small sizes/PPI).
> I feel they give off a casual chat messaging vibe, since before colored emojis became part of Unicode proper they were exclusively used for chat messengers.
This is mostly cultural, though. Some people are used to this.
There's a Unicode sequence that tries to use a monochrome glyph instead if it's supported which I prefer as it's more in keeping with the rest of the text (though an issue with some of those variants is legibility at small sizes/PPI).