> More on-topic, channels have their own tradeoffs. I often reach for WaitGroups and mutexes instead of channels, because things can get complicated fast when you're routing data around with channels...more complicated than sharing memory. I don't think it's good advice to broadly recommend one over the other--understand their tradeoffs and use the right tool for the job at hand.

Unfortunately, some Go people reach for the "this is not idiomatic"-cudgel far too quickly, instead of actually looking at the various trade-offs.