Earlier quoted context omitted.
The Google Fonts API is designed to limit the collection, storage, and use of end-user data to only what is needed to serve fonts efficiently. Use of Google Fonts API is unauthenticated. The Google Fonts API does not set or log cookies. In other words, data from font serving does not feed into advertising personalization. (Disclosure: I used to work on ads at Google)
The Google Fonts API is designed to limit the collection, storage, and use of end-user data to only what is needed to serve fonts efficiently. There's an awful lot of weasel words in there. If it was a simple "The Google Fonts API doesn't collect or store any user data" that would be good. But there's so much hidden language in that one sentence. - "Designed" — Well, it was designed to do that, but it doesn't. After…
The wording around designing and limiting collection is acknowledging this inherent problem and letting the user know that they’ve done their best to prevent malice.
It’s not weasel wording except for anons who like hating on the internet.