That’s only because you use a Mac, on Windows only Edge allows 4k Netflix. It’s the integrated browsers that have the HDCP hardware features so it allows 4K
No. For 4K Netflix the browser needs to talk to a specific, locked down, part of your Intel (!) CPU. This only works on Edge in Windows or Safari on MacOS (it also works with the Store apps). It never works on Linux and it does not work on Chrome or Firefox.
That’s only because you use a Mac, on Windows only Edge allows 4k Netflix. It’s the integrated browsers that have the HDCP hardware features so it allows 4K
Could that be achieved with “Chrome on Windows” spoofing on FF?
No. For 4K Netflix the browser needs to talk to a specific, locked down, part of your Intel (!) CPU. This only works on Edge in Windows or Safari on MacOS (it also works with the Store apps). It never works on Linux and it does not work on Chrome or Firefox.