That's the ideal, but unfortunately not always an option when you're on the receiving end. We're building a data cleaning tool, so the whole point is dealing with messy user-uploaded CSVs where we don't control the export format. If we could mandate ISO 8601 everywhere, life would be much simpler. But the reality is people copy-paste from Excel, export from legacy systems, or hand-edit CSVs, and we need to handle what shows up.