The engines weighed about 4 tons each.

The collapsing towers weighed 500,000 tons (each).

What's the mystery? They were atomized. Fist sized pieces were recovered. Finger sized pieces of the 3000 or so people killed were recovered.

Let me guess......nobody died because they didn't pull out an intact body......

This shouldn't require an engineering background. I get why people are skeptical.
But there's a line of credulity, where the consequences of this would have been once understood. Seemingly, that's no longer true. Basic math comprehension is gone.....