I have read this question:
And it made me curious.
I understand that the charged black holes do have negative EM charge, and they repel.
This EM interaction and repulsion between electron fields around nuclei, cause matter to have spatial extent. This EM repulsion is why atoms can't get closer to each other then a certain distance. And why atoms in molecules can't get closer to each other then a certain distance.
This is the reason why matter is 99% space.
Of course, the Heisenberg Uncertainty principle has an effect on this too.
How can two charged (negative EM charge) black holes merge? How can gravity overcome the EM repulsion and the Heisenberg uncertainty principle?
Do these electron fields pass through each other (merge too) when the holes merge? Does the Heisenberg uncertainty principle and the Pauli exclusion principle for fermions not apply anymore?