I showed those photos to a civil / structural engineer. He said that, based on the photos only, that it was highly unlikely that small amount of water, concrete cracking and minor rebar deterioration caused the collapse.

Foundation damage like that is a SLOW process, which gets progressively worse over time. It doesn't cause the sudden collapsing and complete demolition of a multi-story building within minutes without having outward signs of the problem showing up months ago, getting worse in the week leading up to the collapse and which would have been readily apparent to everyone.

Nice try. Not buying it.