It is nice that text editors are abundantly available and that they can be used for the task. But once the CSV columns get too wide and irregular, then you probably want to reach for a dedicated spreadsheet program, because it is otherwise too hard to figure out which column you are currently reading.
There is still room between a text editor and a full-blown spreadsheet program. New DSV editors could emerge when the DSV format gains popularity.
At the point someone is using a different format, they’ll likely pick something explicitly structured. Like everything from JSON, to Yaml, to Protobufs, or hell even XML.
DSV seems like worst of both worlds. Not really structured, AND also not really viewable/editable by lowest common denominator tooling.
There is still room between a text editor and a full-blown spreadsheet program. New DSV editors could emerge when the DSV format gains popularity.