This isn't literally an observation of a single star at that distance is it? If they only lasted a few million years then it will be unlikely to see a cluster o

This isn't literally an observation of a single star at that distance is it? If they only lasted a few million years then it will be unlikely to see a cluster of them devoid of other 2nd generation stars. It's doubtful (to me) that they all formed at the same time so as to not co-exist with other types.