A lot of thought goes into designs. People labour over these things for months. It's a stab in the heart to see it all get thrown out the window. Why spend that time at all if it's just going to get thrown out? You feel meaningless when this happens.

99% of users don't block web font downloads. Do a quick search for how to block font downloads on your computer. It's a technical task.

It's not really fair to blame Google (or someone else) because you built a giant house of cards and a gust of wind blew it away, even if it is a bit sad and people put a lot of work in it. According to this article, even the very easy workaround of hosting the font yourself is too much to ask.

Still it's a matter of time before the rendering engines change to another correct interpretation of the specification and everything falls apart again.

This all reminds me of that ridiculous thing of the late zeroes that was 'Sifr'. No, you don't get to run 20 Flash applets on your text page just so you can show fancy headings.