> Name one thing that Python can do that Rust/Julia/Crystal/etc can't

This is honesty very 1990's brained, based on the idea that compute power is expensive and constrained.

All Turing complete languages can theoretically do the same things. That doesn't make them equally useful across all domains.

As long as developer hours are much cheaper than compute hours, we're going to be doing certain types of work in high level scripting languages.