I have actually used two of these in some kind of hell SQL query that needed to concatenate strings for the fastest path between database and frontend as possible. I was surprised to see how well it actually worked, I assumed surely some kind of step in the middle of the chain would break non-printable characters.

Not using these is wasting so many bits of one-byte character encodings, I don't understand why we even need to bother escaping CSV files if we could just use the appropriate control characters instead.