There's a fuckton of fingerprinting methods. They're a hell of a lot easier than running a massive number of tor exit nodes.

Canvas fingerprinting is probably the most common method to identify users, but you can exfiltrate data using CSS and no javascript.

I have a few browser extensions to circumvent these methods. Also I'm pretty sure Bromite and Ungoogled-chromium also implement the same measures in the browser. I recommend using either browser (or Firefox with a few privacy extensions) and every platform you can, especially mobile. If you're reading this, immediately download F-Droid, and use it to download one of these browsers.