ArcGIS Pro 3.1
As far as I can tell, it's not possible to edit a CSV from the attribute table.
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It would be helpful if CSVs were editable.
I'm aware that geodatabases are Esri's preferred file format when it comes to editing. But there are other non-GDB formats like shapefiles and enterprise DBs that are editable in ArcGIS Pro. It would be nice if CSVs were editable too.