No, moon, it's for any climb at all. It is what the airframe is capable of doing under power, with the lift that is available from that wing and engine combination, at that weight configuration at that altitude. It's a bit more at a lower altitude and a bit less at a higher altitude due to air densities. There is NO WAY a powerless, truncated, out-of-balance, non-aerodynamic plane in stall can climb 3800 or 1200 feet because the plane will go into stall immediately. You are making a ridiculous claim, as did the CIA and the NTSB when they presented those cartoons. Their purpose was to convince the low information voters with smoke and mirrors. Apparently they succeeded.
Well, let’s say you’re right. What would your graph of altitude vs. time look like? At what time did the nose separate? Would your graph show the wreckage landing where it was found?