[dragonne]

It seems worth noting that as web browsers have removed the ability to disable JavaScript they have added options to disable web fonts. I flipped this switch in Firefox for Android because it makes pages load noticeably faster and conserves data. Lots of sites seem to host web fonts on third-party CDNs which require a separate TCP connection: a big deal on high-latency mobile.

Blocking web fonts usually does not noticeably degrade a site's usability or functionality. Icon fonts are the exception. I've learned that a question mark in the upper-right corner is usually a site's menu, except when it's the search function. I don't think that this level of breakage is comparable to what happens when JavaScript is disabled, since many sites just break completely without scripting.