As far as I can understand the math and observations black holes do not have an inside. All the mass and information is concentrated on the surface of the event horizon. As objects approach the event horizon their clock slows down, it would stop if it ever actually reached the event horizon. The object will eventually reach a point where its approaching the event horizon at the same rate as the event horizon is shrinking as the black hole slowly evaporates.
Even from the perspective of the observer the universe slows down as they fall, including the black hole as its part of the universe. Assuming you are a being that doesnt die from falling at a black hole you would never reach the event horizon from your perspective either because the closer the black hole gets to you the slower it will approach.
Everything in the math says black holes have no insides. Why do they waste time trying to break their tools on trying to discover a secret inside instead of trying to determine what kind of universe allows regions of nothingness?
Or am I just misinterpreting the goals here?