DownwindMaddland,
For all the speculation and opinions voiced on this thread, I think you hit the nail on the head. It’s going to boil down to the Tower Controllers incredulous decision to clear SW in front of the FedEx jet. There isn’t anything broke with the US system, except , perhaps, the current trend of “feel good/woke” hiring practices that don’t translate very well in Aviation. What’s the old saying,
"Aviation in itself is not inherently dangerous, But to an even greater degree than the sea, it is terribly unforgiving of any carelessness, incapacity or neglect."