No, Netflix uses 720p when it can’t detect DRM and HDCP on HDMI. It’s the default case for Linux for this reason.
How do I check that ?
https://cd-rw.org/t/how-to-enable-netflix-full-hd-1080p-on-l... Ah, there's an extension.
edit: https://www.netflix.com/fi-en/title/80018499 Aaand I have been watching 720p... :D.