“You’re also completely wrong when you say that Wingtips have nothing to do with turbulence.”
I meant to say instead:
“You’re also completely wrong when you say that Winglets have nothing to do with turbulence.”
Second correction:
Moving the turbulence from wingtip vortices away from the wing where they reduce lift is the key to how winglets work.
(I also see this explanation is confirmed in the patent applications for winglets)