“Simple. Engine suddenly stops working. Pilot pulls jet into vertical assent and then ejects when it stalls. Jet then falls vertically to the ground.”
Not so simple. I’ve never heard of a pilot responding to an engine failure by pulling the nose up, stalling, and then ejecting. And this failure would have needed to kill two engines, which would be catastrophic.
You sure as heck don't want to eject when your forward velocity is 700 miles per hour. No, you slow the jet down, if possible, and then eject. If you are 100 feet off the ground trying to hit a ground target and going 700 miles per hour and you suddenly lose all engine power, are you going to eject then or are you going to pull that plane straight up until you are as high as possible before pulling the ejection lever?
If one engine went kablooey (that's a technical term) and shot parts into the other engine, that would take care of that right there. It's happened (rarely) on B-52s where an engine came apart and the other engine on the pod was toast as well. Of course, in a BUFF you keep flying on the other six engines.