Question about electron-degenerate matter

Electron degeneracy pressure will halt the gravitational collapse of a
star if its mass is below the Chandrasekhar Limit (1.44 solar masses).
This is the pressure that prevents a white dwarf star from collapsing.
A star exceeding this limit and without usable nuclear fuel will
continue to collapse to form a neutron star or black hole, because the
degeneracy pressure provided by the electrons is weaker than the
inward pull of gravity.

My question is: why doesn't this violate the uncertainty principle?
For that matter, why don't black holes violate the uncertainty
principle? And what happens to the electrons in neutron stars? Are
they pushed into protons to form neutrons?

Thanks,

faye kane

.

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