So, IIUC, this is an alternative to the paper that was discussed a couple of days ago saying the Universe might be twice as old as previously thought. The "problem observations" both of them try to address are what appear to be huge galaxies at an early time (according to redshift) when there shouldn't have been such large galaxies yet. The aforementioned paper says maybe the Universe is actually much older. This paper says maybe those huge early galaxies aren't actually galaxies but "Dark Stars" instead.