Tangential but it seems like many web apps shown on HN feature a plethora of emojis. I feel like it's overused, lazy development, and therefore hurts the identity of the app when it shares the same suite of "icons" as so many other sites. At one point they were cute, but I see them absolutely everywhere now and they frankly look juvenile sometimes
I'm not sure how many people will step over the line you've drawn. Offensive as it is to certain sensibilities, there's a reason so many people and products keep using "the same suite of icons".
And really, it's usually all just user-generated content. Has GitHub even done any "lazy development" here, or are they just entering emoji in regular text fields?