[workhere-io]

One potential problem here is that google will use this to widen the gap between it and the 'one page apps' web and other search engines (such as duckduckgo) that can't match it in resources.

There are free and open source tools available that would help search engines parse pages containing JS (PhantomJS comes to mind).

[cbr]

It's not just tools, it's the cost of all that parsing and executing in a mock browser environment.