Eddington Limit cited on PBS Nova

The most recent program of PBS Nova considered how massive
black holes could have been formed in the early universe.
It was concluded that they could not have been formed
by simple accretion because Eddington had found that radiation
pressure would limit the rate of accretion.

Eddington was unaware of dark matter which, I suppose, would
not have emitted or been affected by such radiation. Is
my supposition correct and, if so, does that mean that
super-massive black holes could have been created in the
early universe by accretion of dark matter?

Thanks.