Specifically, a website operator using Google Fonts was ruled to be non-compliant, for not disclosing that they were doing so, and refusing to honour their pref

Specifically, a website operator using Google Fonts was ruled to be non-compliant, for not disclosing that they were doing so, and refusing to honour their preference of the user. I think a pure-play hosting service is probably fine for hosting fonts and relying on legitimate interest, but that's not Google, who is not being paid directly for hosting the fonts, and who actively wants to use the users' information for marketing purposes that the user clearly does not want.