Yes, it's fine, but it shouldn't be necessary. If Windows and Mac OS just had native support for always-on-top windows, you wouldn't need it.
I actually prefer macOS's PiP handling compared to other operating systems. In that it's a blessed concept that only goes to one corner of the screen and can be shunted out of the way easily.
Windows has had native support for always on top windows for over 25 years
I actually prefer macOS's PiP handling compared to other operating systems. In that it's a blessed concept that only goes to one corner of the screen and can be shunted out of the way easily.