"Not really."Yes, really. Per VC 21202, it is explicitly: 1) when passing another bicycle, 2) where the cyclist is planning on making a left hand turn, 3) "[w]hen reasonably necessary to avoid conditions [...] that make it unsafe to continue along the right-hand curb or edge", or 4) approaching anywhere anyone can make a right hand turn. That's "pretty broad", in my book - feel free to disagree, obviously the term is subjective.
"You will probably usually get away with that the same way you'll usually get away with ignoring the law requiring yielding to pedestrians at intersections"
That is a horrendous false equivalence. Violation of that law puts people at risk. I'm advocating an interpretation of a law permitting behaviors that keep people safe.
'But that's not at all what the law says, and I'd be very surprised if there is any reference in the statute, or any case law, that you can point to that suggests your attempt to define "practicable" as "whatever the bicyclist subjectively feels comfortable doing" is a correct interpretation of the statute.'
Not "subjectively feels comfortable doing," but "reasonably considers to be the safer choice". This is the same responsibility everyone has on the road, and it's insane to think that "practicable" is not intended to take safety into account. Riding unsafely is not practicable. I have no idea whether this has been tested in court, but anything else is crazy.