A small point but it assumes that your browser's self-declared timezone is "true" to where you live. My timezone is spoofed to UTC+0; my VPN server is in a different country; and my browser language is set to en-us. I feel like if you see a user whose settings are all of the above then you can assume that none of those three data points actually describe the user, unless they coincidentally are a US English speaker or live in UTC+0, but that'd just be them coincidentally living where anti-fingerprinting browsers report you as.