I agree with the gist of this article, but there is an opposite side to this piece as well.

We do need those developers that pick the most wild, crazy, and bleeding edge technologies. New technologies shouldn't and certainly don't solve every problem out there, but they often tackle a couple of really interesting areas quite well. At the very least they allow us to question and rethink our current development stacks. Also, being one of the first to adapt to a technology has it's benefits, not saying that it justifies the risk, but it should be considered.

Also I think node js and cassandra are pretty easily maintainable, but thats not really what this is about :)