Nice icons indeed, but amazing? How is this more amazing than Linux, apache, node.js, PostgreSQL, Ruby on Rails, python, .... And mane more. All this software is also free... Just take a look at the Debian/red hat/Ubuntu repository, it is practically a whole marketplace worth of free goods...
It does not necessarily have to be more amazing than all the free software you cited to be amazing by itself, but I get your point.
People seem to me more or less used to software given for free (& sometimes even open source) by now, especially on HN. On the other hand, quality graphic work is not yet something this community is used to see free and with such a permissive license.
Anyways, this is still a lot of hard work, given for free, and it is amazing.
My logic is fine. All I did was quote a guideline. If you think HN is becoming like Reddit in a bad way, then back it up with more than a worthless one-liner.