How to set display of all text while downloading FontAwesome web fonts?

Question

css

Hello everyone :)
Now we are chasing greenery in Google page Speed.
There is such a recommendation:
Set the display of all text while downloading web fonts
https://site.ru/fonts/fontawesome-webfont.woff2?v=4.7.0
FontAwesome font.
How to display this font? After all, as far as I understand, you need to specify an alternative to the web font. But what's the alternative to font awesome ? Or is this another bzik of Google and should not be followed?