Ryman Eco – The world's most beautiful sustainable font

Awesome idea. Unfortunately the claim about being 100% free is about price and not speech:

  3.2 You shall not alter, merge, modify, adapt, translate or decompile,
      reverse engineer, disassemble, or otherwise reduce the Licensed Fonts
      to a human-perceivable form.

If the authors really want to sell us on the font, they'll use it in the body of the text that describes it. I really don't think this would work for body text, which is where the majority of the ink ends up.

The font is too jarring, so I guess if you wanted to advertise how sustainable you were being by using it, people would notice from the font alone.