When I said "light traffic," I meant basically non-existent traffic, because in my experience with other turns the car will go in that scenario. It's when there is moderate traffic that it struggles to actually commit to a turn (and I don't know all the reasons for this).
I don’t understand why people think this turn is difficult for a human. You just have to cross three lanes of traffic, with excellent visibility (when positioned correctly of course, not even close to sticking into traffic, but not 5 feet further back than required), while negotiating any left turning traffic. This is easy stuff.
It's harder if you want to do all the lanes and thread into traffic on the opposite side in a single move, but that's the advantage of the frogger strategy (which personally I would probably not employ unless it was really busy, since it's annoying, and exposes you to traffic traveling by at very close spacing and very high speed).
Here is the excellent visibility from the approximate place a car should stop (without sticking the nose into the lanes of travel); you can see it is very good visibility; no occlusions (other than the post which is not large enough to be a problem of course). The sidewalk width (and the median beyond it!) makes it not a problem at all to get good visibility for the turn:
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