That part didn't seem strictly required to address the third-party content problem. They could have used the font icons, and just copied all the necessary bits to their server.

Also, for anyone with a similar problem, consider backing https://www.kickstarter.com/projects/232193852/font-awesome-... . They're 15 hours from completion, and $38k away from a stretch goal to release SVG icon support in the Open Source version.