Copying is privacy and piracy is still an issue for the host.
Copying can be unauthorized, but when you say it as it is, "unauthorized copying" sounds a lot less terrible then "stealing" and "piracy", and is more precise in meaning.
Calling it "stealing", "piracy" and other ugly words is a strawman argument - we all agree stealing (physical items) and piracy (on high seas) is bad, so that would imply that copying is bad, too, since "copying is stealing and piracy". It's not, and additional arguments are needed.
Using an untethered copy is indeed more privacy-friendly than using most garbage publisher portals and offerings. And yes, piracy can be a problem for the host if she has insufficient opsec.