Recently I keep hearing pundits opine that the "open source" movement hasn't gone anywhere and is basically irrelevant.

IMO that is a great sign that it's a good time to be getting into Free Software. The Affero GPL is probably the only thing that can realize the potential of cloud computing, and keep the cloud bubble from popping and a major swing back to locally hosted IT systems.

PS - Also, I am very glad that "open source" became unfashionable because it made Eric Raymond go away.