You’ve done a great job of explaining exactly how 4 way stops are terrible , and why they should be eliminated.
Only two countries make heavy use of them, so it seems less effort to get rid of them and the AI driverless world will be better without them
What I've described is the reality that I, along with self-driving Waymos in California, exist within.
There isn't a generation alive that didn't grow up with this reality in these places.
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Now, if you want me to agree that there are much better methods than stop signs to control traffic at intersections, then sure: I can agree with that. Absolutely.
But I'll agree only on one condition: That you cease immediately with all attempts to make perfect be the enemy of good.