> It’s one of the most-served fonts on the internet, clocking in at some 120 billion font requests a month.

Isn't this an incredible waste of bandwidth? Surely people only need the font once.

Browsers made a fundamental change a while back to not share caches between origins because caching it became a side-channel to detecting if someone had visited it before.

So now if two different websites embed the same remote font then visitors will have to download it separately for both sites.

https://developer.chrome.com/blog/http-cache-partitioning