That's weird. The package seems to include the ttf files only... https://www.archlinux.org/packages/extra/any/noto-fonts/
Re:Google Noto Fonts
by Normal_gaussian on Thursday October 06, 2016 @07:27PM
(#12656974)
It is seemingly to do with how the "web fonts" are implemented by browsers. For more weirdness look here: https://news.ycombinator.com/item?id=12656642
Local fonts package installed: http://i.imgur.com/ycRs3A0.png
No Local fonts package installed: http://i.imgur.com/TUKsIY4.png