I would not have written that in response to the post-edit comment. I realized after editing that I should have put the new comment on top, but at that point it was too late to edit further - my apologies for the confusion. I still don't agree with the current comment - as you can see from my updated response (the bottom half) - but I wouldn't have called it stupid.
Reiterating what I said there, with a slightly different spin - it is not the case that, in general, "impeding the flow of traffic with your travel" is illegal. That is not really changed by the fact that there are some limits on just how extreme some aspects of that impediment can get; there is plenty of room to bicycle in a way that impedes some traffic and does not fall afowl of the law.
Most relevant to the context here, it is not a law that a police officer could use to ticket a cyclist for the mere act of riding slowly relative to cars, even if they are impeding the flow of several cars.
Reiterating what I said there, with a slightly different spin - it is not the case that, in general, "impeding the flow of traffic with your travel" is illegal. That is not really changed by the fact that there are some limits on just how extreme some aspects of that impediment can get; there is plenty of room to bicycle in a way that impedes some traffic and does not fall afowl of the law.
Most relevant to the context here, it is not a law that a police officer could use to ticket a cyclist for the mere act of riding slowly relative to cars, even if they are impeding the flow of several cars.