Because I'm saying that the act of crossing the road _itself_ should not be illegal - merely the act of crossing it unsafely. By definition, this is not disruptive to traffic flow.
> why pedestrians should not be expected to follow traffic laws
They should. This is begging the question - I'm saying that the law itself is flawed, not that a law should exist and be flouted.
> why the law should allow pedestrians to step into traffic whenever and wherever they want
This is a strawman. Pedestrians should be allowed to step into _roads_ (not into traffic) whenever and wherever it is safe to do so.
That's no longer a U-turn
Perhaps the phrase “perfectly safe” is wrong. Maybe “otherwise intrinsically safe” would be more accurate. Having said all that, I do wonder if we have U-turn accident statistics.