I don't buy into this. I've been producing music for over 10 years now. The "snippet" and fire and forget approach doesn't work. I'm sitting on thousands of different loops, demos, half-finished songs, and so on.

Over the course of of a session, when you're jamming with your synthesizers and instruments, a project can transform from A to B to C to D to E where E ends up sounding nothing like A. You have your hard- and software synths, fantastic effect plugins and hardware, drum machines, more outboard gear. You tweak and compress, change melodies and harmonies. You press 'save as a new version' every minute.

Your wandering mind be damned, if you want a great track you need to stop, sit down, and focus. All good tracks I come up with come from a focus on quality, not quantity. By the way, in my opinion, iterative refinements do not belong into the category of "quantity", I don't know how anyone could make such a statement.

Of course you sometimes need the sessions to come up with some idea that resonates with you, but after that you (read: I, I'm talking about my own experience) have to force yourself to focus.