The pilot left that to chance and chance made it that nobody was killed. At the very least you can recognize this was a failure of the pilot especially when the plane was realistically flyable, and backup instruments were available, in line with his training. In line with that overly broad definition of "uncontrolled flight" he ignored the backup instruments and punched out before attempting alternatives.

> a malfunctioning plane

The report called the aircraft flyable. The manual being overly broad on what's an "out-of-controlled flight" means he was not derelict in his duties but ejecting from a flyable aircraft (and leaving it to crash at the whims of randomness) was a mistake.

> If his plane went towards the ground with mach 1 at 1900 feet impact would occur in 1.5 seconds

But it wasn't, he wasn't in the middle of the crash, some instruments malfunctioned, the backups were working (they're there to be used in case the primary fails or else the designers would have bothered to put backups). The plane flew another 64 miles which took substantially more than 1.5s.

The "well technically" argument works less as the stakes go higher, and even less when dealing with a squadron commander. The plane flew, the instruments worked, and the pilots are trained for this. The report recognizes this.