I completely agree, the right tool for the task is absolutely important. I would never say NoSQL stuff is bad per se [1], but I criticize its use where it is obviously a bad choice and only used because it is the new shiny thing.

[1] Actually I said that in my first comment, but the wording is just bad and probably way to sensationalistic. What I really wanted to say is that it is a really bad fit for modeling you usual business with user, orders, products and the like.