Folks,
The KSFO operations are justified by long demonstration of successful operation, around 60 years?? I would think that the KSFO simultaneous arrivals and departures on intersecting runways would give some people the willies.
Indeed, all these operations were established long before naysayers could think up all sorts justifications as to why things can't be done.
KSFO is by no means the only US airport with relatively close spaced runway operations, you just get on with it.
Probably a good example of the US "Can do" spirit, versus the more recent spirit of "can't do" elsewhere. A very practical approach to ATC aircraft handling is characteristic of the US, as opposed to the "can't do" theoretical approach more common in large parts of the world.
For Australian readers, not long after WWII, an Australian National Airlines (ANA) DC-4 hit trees on a departure on 28s, going out through the "Gap", not adhering closely enough to the track based on the GAP NDB, and arrived back on the ground with a bit of pine tree lodged in the LE of the wing, between two engines. Some few years later, a BCPA (British Commonwealth Pacific Airways) on arrival for 28s, hit the ridge quite close to Woodside, Half Moon Bay from memory. Shortly thereafter, QANTAS took over the route.
--- deliberately I assume.
An equal rights demonstration at work --- giving GA such access in Australia would be anathema to "professional" pilots.