as a simple unexperienced corporate pilot I don't have the thousands of cruise hours to understand the specific handling of heavy machines.
You don't need thousands of cruise hours, but you DO need experience of handling large and heavy jets, not fighters and business jets, to understand the ramifications of so much inertia. You seem hung up on this glide thing. They were at some 3 lengths of the aeroplane altitude with minimal sub idle power. You seem to be wanting them to push the nose down to sustain speed? In an aeroplane that size, pray how would they pull out with no pitch power coupling and below minimum speed? Your idea is, to put it mildly, utterly daft. Yes, do that in your HS125 or little fighter, (if you insist it is a good idea), but not in an aeroplane of that scale.
You seem to have a weird fascination with trying to prove they did not do right and you know better! They stretched out, in a few seconds, a final desperate glide, far far better than you could dream. But you insist on knowing how to do it better! You're daft. They had much less than a minute to try and control a unique and out of the blue situation, and didn't they do well!
You will also get an ignore if you carry on with this bitching of yours any longer.
It's not the crew's job or the airline's job to produce any sort of accident report. When the authorities have something to say, they will say it, not because anonymous Ppruners demand it!