Not sure what that has to do with understanding how the universe began. Clearly you have no understanding about dark matter or dark energy. Dark matter and dark energy is a way bigger mystery than how the universe began.If you call a working understanding of 5% of the universe an "overwhelming amount of knowledge" then you have bigger problems than I thought.
Would you want a surgeon to operate on you if they only knew 5% of the procedure?
The fact is we do not have any clue as to what 95% of the stuff that makes up the universe is. So your absolute statements as to how the universe came into being can't be more than 5% correct
Do you even know why background radiation exists? What caused it? It has absolutely nothing to do with dark matter or dark energy and is the fingerprint left behind of the creation of the universe.