Murph! TARS!

With that out of the way, that's a really cool system identification/model verification approach to trying to figure out what's going on behind the event horizon. We live in amazing times.

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Isn’t this quote from the article just completely wrong?

“the event horizon is caused by the infinite gravitational pull of the singularity. Without the singularity, the gravitational pull is merely incredibly strong, but not infinite, and so you're always able to escape the vicinity of a black hole as long as you flee with enough velocity.”

Calling the gravitational strength inside the event horizon infinitely strong is a poor choice of words, but it's not exactly wrong in layman's terms since escape would require infinite energy.

At the same time, it's not like you instantaneously travel to the singularity once you cross the horizon, which is what a true infinite strength force would do.

I'd postulate that to the external "spectator" an object would never reach the singularity due to time dilation beyond the event horizon. The matter would simply be stretched out over the course of eternity "towards" the singularity in whatever spiral if any spin is present inside.

In fact the density of any materia inside the event horizon might be so high that matter wouldn't be able to transit the event horizon itself until it itself was compacted down to the density of the matter beyond, due to buoyancy, and the density at the event horizon just happens to be roughly where light can be "pushed" away due to buoyancy and lensing.

Just late night bed thoughts. Probably worth nothing as a nonphysicist.