Netflix only serves 720p (or below) video to any platform that does not encrypt the video path that prevents OBS or anything else from screen recording.

Not anything else, eventually the signal needs to be unencrypted so your eyeballs can see it. You don't want to see static.

So between the LCD and the connection, the signal is passing in cleartext. You can intercept that.

There's HDCP converters available for cheap.