Google is known to fingerprint you on their sites[0] and this practice will continue unless some sort of political action is taken to make fingerprinting illegal. WebGL is not the only heuristic used to reliably determine it's a specific device accessing a site, but a whole slew of techniques can be used to reliably determine it is 'you' who is on a site (you can even detect if a browser is running in a virtual machine, among many other techniques to fingerprint).
To mitigate this, I do most of my browsing with JS disabled by default, and if I really need JS turned on (for a site I trust like my bank), then I temporarily turn it on for that specific site. Also you can just disable WebGL in Firefox in about:config but keep in mind, there are many other techniques Google and `ADTech` in general can use to fingerprint you.
Google is known to fingerprint you on their sites[0] and this practice will continue unless some sort of political action is taken to make fingerprinting illegal. WebGL is not the only heuristic used to reliably determine it's a specific device accessing a site, but a whole slew of techniques can be used to reliably determine it is 'you' who is on a site (you can even detect if a browser is running in a virtual machine, among many other techniques to fingerprint).
To mitigate this, I do most of my browsing with JS disabled by default, and if I really need JS turned on (for a site I trust like my bank), then I temporarily turn it on for that specific site. Also you can just disable WebGL in Firefox in about:config but keep in mind, there are many other techniques Google and `ADTech` in general can use to fingerprint you.
[0] https://jonatron.github.io/webgl-fingerprinting/