The important point in posts such as these is that execution matters, not the tool you use. If the tool you decide to develop with fits, then use it. If you find out later it doesn't work, then switch. Sure, the tool you use can affect your execution, but that only means you have to understand how you want to execute before even selecting a tool.

I think it would be a big mistake to read such a post and come to the conclusion that Rails is somehow superior to node.js.