It does nothing of the sort, node.js is ready for the prime time, just have a look at transloadit, voxer, yammer etc etc. Don't confuse the tool not being ready, with you not being ready to use the tool. Equally, there are plenty of people are making couchdb work for them.
None of those companies have a website as their main property as I do. The one I think of when it comes to using node is Klout, and Klout's performance is absolutely atrocious.
