They released Safari for Windows when they intended iPhone to only run web apps, it was a way for developers on Windows to make mobile "apps". Then they changed direction and Safari for Windows lost it's reason to exist.
If that was true they wouldn't have pushed Safari out as an update to windows users who had QuickTime or iTunes. It was checked by default and lots of people installed Safari on Windows without realising it.
https://www.cnet.com/news/apple-pushes-safari-on-windows-via...