35 crypto companies got together to make a change dot org petition called “Bitcoin Deserves an Emoji”.
F that
I don’t know about strictly “unable” but there are a million contexts where it is a bad idea and simply not done. Like a spreadsheet or financial document. Or anywhere you want your text to behave like text — with a consistent font, color, style, etc. The difference between $ (text) and 💲 (emoji) is pretty stark in most contexts.
For example, on the dark background of the UI I am viewing your comment on, The $ symbol is in white colour (as the font has been set).
But the emoji is dark grey, and wouldn’t be visible if I had a cheap, low contrast monitor.
For me it looks like this:
So the text one appears the same for both of us but the emoji one appears differently which could possibly change its meaning if they were different enough