What leads you to believe that no experienced astrophysicists have serious considered any of these "obvious" theories?
Because that's basically what you're suggesting.
Because that's basically what you're suggesting.
I've asked a question like this and was confirmed that we can't observe black hole formation, only "collapsars", which are almost like black holes but without matter crossing event horizon.
Looks like astrophysicists assume one thing and cosmologists another thing.