I care a lot about typography and making a platform in which non-latin scripts can be read well. Mataroa does not provide any font. Rather, it uses the end user's system fonts. System fonts are most probably better than webfonts. They can define a large set of characters, including as many languages as they can, without caring about how big they get. This is in contrast to webfonts, of which all character glyphs need to be sent to the client—so size matters.

I've also written this text on the topic: https://nutcroft.com/blog/in-defense-of-user-defined-web-fon...