The 10pt text here on Hacker News is much bigger than the 11px text on that blog.

My browser allows me to edit the blog's source and reload; 11pt text on there looks fine.

... get your eyes checked

This is a terrible, terrible attitude.

I had a user in there mid 50 who kept complaining about the fonts in a custom application. Turns out he was having vision issues and after getting some reading glasses he stopped having any issues.

PS: I have a high resolution screen and changed my default zoom the make the vast majority of websites readable. True, it would be nice if websites stuck with readable percentage based fonts, but until then it's an easy change. And, IMO far more productive than complaining on HN which the author might not even read.

Bodies and large amounts of text should be 16px.

http://www.smashingmagazine.com/2011/10/07/16-pixels-body-co...

If I need to put any amount of effort into reading your site then you are doing it wrong.

Also, open up the dev tools for this article and set the font to 16px. You will see how much better it looks and how easy it is to read.