If I'm given the choice, I usually avoid web fonts. Most platform's built-in fonts are usually pretty good and fast. It's fine for a website to look different on various browsers and operating systems.
Where as you if you cache the linked CSS file you only take the hit once but as you navigate around the site each time it'll be loaded from the cache.
It’s a pointless micro-optimization.
When your site has a large audience, every microsecond counts. Especially when you don't have someone bankrolling for your traffic. Speed plays an important part for SEO and UX.
There are so many other, bigger, better, wins to focus on first.
Considering anything Google does as useful for the average developer - even at a reasonably large company - is like thinking pizza delivery guys should emulate UPS: it’s a misunderstanding of context.
That's a damn lot of CSS
FWIW here's a pretty good analysis that shows even with h2, bundling and inlining still has benefits: https://sgom.es/posts/2017-06-30-ecmascript-module-loading-c...