I thought the entire universe grew out of the “singularity” with the expansion we call the “Big Bang”.
Which means until the “Big Bang”, there was no universe, just the singularity.
So if these primordial black holes were not incorporated into the singularity, and there wasn’t any universe yet because the “Big Bang” hadn’t happened, where the heck were these primordial black holes supposed to be living?
Obviously the “singularity” was getting some on the side.............