For some time, though last time I was there it didn't seem to be an issue, Font Squirrel would fail to load properly, and I determined it was because their intermediary (Cloudflare?) were blocking all the sub-requests for associated/linked files because they thought I was a bot.

I thought it had something to do with running uBlock Origin, but I don't remember what happened when I trialed turning that off on their site.

I just decided to visit less frequently.