You don’t have to spoof everything. If you setup a wireguard server on your router then, then VPN into that then you’ll be on the actual network and Netflix cannot tell the difference.

Netflix has come out and said they don’t use GPS. I cannot authoritatively say they don’t traceroute or use other signals, but the wireguard tunnel works so you can only assume they do not.

Yes it works. It really is that simple!

I see this more as a tool for people who notice reduced battery life and want to do something about it. Currently they essentially need to guess if the battery is the issue and get it replaced to find out.

If you notice your battery life shortening, the health check can either confirm that you will see improvement with a new battery, or it will tell you your battery is okay, and reduced life is due to software changes or increased usage.