Something I still find hilarious is that after a product I worked on started to enforce a content security policy, the #1 blocked source was always for google font resources. Of course users could whitelist the domains, but many didn't and anyway their sites looked fine.

would something like that also work on a pihole ? that would be perfect for the other devices too that dont have possibility to use ublock

thanks

Yes - you can block domains at the network-level with a pihole.

Is it supposed to be added to "My filters" tab in settings?

Yep, just add those lines in there and save.

the problem aren't the fonts, the problem is the developpers who made the websites with shitty performance

this font is quite small