Sort:  

White and black dwarfs are formed from the collapse of low mass stars while neutron stars are formed in the catastrophic collapse of the core of a massive star.

except that black dwarfs are....theoretical...and the universe isn't old enough yet for them to exist..
theoretically of course.

Yes, the video talks about the time when universe will be in its last phase and hence talks about black dwarfs, which will be probably present at that point of time.

no offense
but I call BS.
I'm of the steady state school of cosmology.