Before I knew it was a comic site I was amazed they took the time to copy all of the icons they wanted as svg. Even knowing the author is an illustrator it is still admirable and impressive.
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.
> the work required to avoid them
And that's the rub, it was a _lot_ of work. It's nice to see it can be done, but few sites will have the time or inclination.