I have yet to figure out whether I found it satisfactory.   I'm thinking not.
1.   It was suggested that the presence on the colonies of objects identical to modern ones would be explained within the series.   For instance, we've seen Humvees, street signs, "All Along the Watchtower", and dozens of other little things that made Caprica and the BSG universe appear only somewhat different than modern LA or Toronto.   
This explanation did not occur.  The only way to get one now is to give a deus ex machina / Platonic explanation . . . that the God-thing of the BSG universe is a controlling and repetitious entity or force, producing certain forms over and over again in the midst of the same basic pattern.
For the God-thing there seems to be an ideal truck communicated to the prevalent lifeforms of the day, and this is the Hummer.  For the God-thing there seems to be an ideal song communicated to the prevalent lifeforms, and this is "All Along the Watchtower".   For the God-thing there seems to be an ideal road signage communicated to the prevalent lifeforms of the day, and this is the modern US standard.
It's just retarded.   If you're going to tie those things together then you should give a timeline which makes it possible.   The one provided by the finale does not.
He'd have almost done better to have a very Trekkish solution of everyone stepping through a Guardian-of-Foreverish portal and ending up as historical figures (known and unknown) guiding us to where we now are. 
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2.   Fly all the ships into the sun and give up all of your technology and even society?   Are you out of your mind?
A.  This is an instant death sentence to anyone with sustained medical needs.  Laura Roslin could be construed as an example of this, though she was already on her way out the door.  Anders was definitely an example.   Even Hera, a unique medical case, could've needed care (and has at times).
B.  Splitting your groups across a planet with no means of contact is absurd.
C.  Where is the evidence of advancement 150,000 years ago, other than the interbreeding?
D.  Why burn all the books, proverbially speaking?   No history or warning was left for future generations.
E.  Some have suggested that this is a good way to hide from the Cylons.   No, it isn't.   The Cylons would locate a planet filled with completely defenseless humans.  Time to build a new 
Farm!  "Maybe we'll have more luck with these not-quite-Kobolian-humans."
3.  Baltar lives.  And gets Caprica.  What the frak?  
A.  Why no kid from them as another Eve?
4.  The God-thing is said to be beyond good and evil . . . these are thought to be human (or Cylon) philosophical constructs.
My ass.  It's suggested that the population of the Twelve Colonies was 20 billion.  There are less than 40,000 free survivors.   That is evil.  And per the way this is all supposed to be playing out, that was not merely Cylon action . . . that was the will of the God-thing.
There's more, but I'm tired of typing on the matter.   All in all, it just makes little sense.  It's not as bad as "These are the Voyages" by any means, but I'd say Moore did better with his part of his last show-ender for DS9.