The problem is that it's not really a standard. It's reinvented ad-hoc by whomever programs it today.

Should there be any whitespace after the comma? Do you want to use pipes or some other character instead of commas (ASCII 0x1E is sitting over there for exactly this purpose, but it's been ignored for decades)? How do you handle escaping your separator char inside the dataset? Are you [CR] or [LF} or [CR] [LF]? None of these questions have a set answer. Even JSON has more specification than this.

Beware opening CSV in Excel. You will lose all your leading zeroes, among other "helpful" edits. Sometimes the leading zeroes are there for a reason!