php is still the easiest thing to deploy on a server. unless you get loads of ecommerce cms or blog engines in node i wouldnt bet on it. on client there is not much choice anyway.
I don't agree that PHP is that easy to deploy properly. I think it has that reputation only because most people using PHP never actually have to set up and configure a PHP server.
But my point is about the client side. We don't have much of a choice between client side languages, but we do have a choice about how much we do on the client in the first place. That equation has changed quite dramatically over the past decade thanks to new JavaScript runtimes.
[Edit] Or did you mean to say that most people use node on a PAAS? In that case it's not a tautology, but I don't think that most people do, and I didn't say node was easy to set up.
