The point is that it will never happen that all codepoints are available everywhere (every font, evers OS, every device), and i certainly don't want a gazillion of pictures loaded on my smartphones little memory, just because some people think it necessary to have a symbol for poop in fonts which is never used anyway. I even consider it a total waste in my laptops 16GB of memory, to be honest. It's not a waste when it serves the real purpose of a language. A chinese word for poop? Sure. A picture of actual poop? No. And where does it stop? Can i have some dog poop and cat poop codepoints please? I'm sure elephant poop looks very different to cat poop, i want a code point for that too.

I say it again: If you want pictures and cliparts, use .png. If you want to write actual text, use fonts. It's as simple as that.