No! The poop symbol is used in data, and thus is a terrible separator. If you have to quote it anyway, use commas, as that is already in use. Or use "Unicode" separated values.
You could just apply the standard CSV escaping mechanism, so a single poop in a cell is represented in the file by 4 poop emoji. (Two to quote, one to escape, one as a literal. See RFC 4180 if you're still confused on "why 4?")
Sure, but we already have CSV. A different format should have some advantage over existing formats. If you have to escape it either way, then use the format people can already process.
