Doug is free to define paravane in a restricted way, but fishermen and AWE scholars will also define paravane more freely to include the same devices anchored in flow.
If Minesto’s water kite is towed, it does not suddenly become a paravane to most users of the term, it already was a paravane.
The broader definition is more sophisticated, under Galilean Relativity, where a kite anchored in flow can also be said to towed by the anchoring media.
Let engineering terms-of-art be used however engineers wish in context. We understand that some paravane users will have a hard time accepting that any sky kite towed in water by a boat is only a paravane during towing, but not if anchored in flow.
Here is a nice page on reaction ferry power harvesting, which is a paravane class to those who so define-
Here is typical sport-fishing expert usage of “paravane” in anchored-in-current mode-
“Did use [paravanes] in river mouth currents as a kid…A paravane probably works better with a steady continuous pull like in the current…”