With the current direction of web development this is something that needs to be addressed. Google has already confirmed that they are in fact crawling Javascript based sites.
Reference:
http://ng-learn.org/2014/05/SEO-Google-crawl-JavaScript/
https://support.google.com/webmasters/answer/174992?hl=en
The solution in this case is an HTML snapshot which, you could roll your own, but there are services like https://prerender.io/ that can do it for you.
This doesn't quite help the case for Moz Bot, maybe the HTML snapshots do work here - I haven't tested it yet. Either way, Javascript is becoming more and more a dominant language to code up websites. I hope Moz recognizes this because this toolset is awesome and I'd love to continue using it.
