The string got out of hand because a few people with very little experience started spouting theories instead of "listening up on the frequency before keying your mike".
I think if I was working on my CFI and the subject was the emergency landing of a jet, I would probably try to learn what I could and then ask questions, not try to comment like an expert.
An "engine fire" and "smoke in the cockpit" are two entirely, entirely, e-n-t-i-r-e-l-y different categories of emergency.
An engine fire in a transport-category aircraft is handled by climbing to a pre-established minimum altitude, performing memory items (if any) and then systematically performing a checklist, (including shutting down the engine, firing one or more extinguishers, and securing the engine) followed by a well-briefed return to the airport, or the most suitable airport, and it may or may not require an evacuation.
A fire in the cockpit, or smoke in the cockpit is an entirely different animal, and the goal is to get the airplane on the ground ASAP before you become incapacitated. Hopefully, you can run the checklists, but the most important thing is to keep it under control and get in on the ground while you are still able, period. Same with a cargo fire.
As for intentionally landing a jet gear up on a hard surface runway? That is for light airplanes, bubba.
