In fact, there is a media query checking for this and changing the font weight to 300. Actually it makes it 100 for retina screens. It's tested and works in several devices - let's check if there is any error in loading the 300 font weight from google fonts though - thanks for the tip.

Your comment on examples is very correct and we've been advised at least 3 more times here; we are definitely doing this soon! Thank you again for your comments.