Bunk and nonsense.
Our entire understanding of the Universe is based on scientific data accumulated over hundreds of years, at ever increasing rates, and accuracy.
The "Big Bang Theory" is only one of a number of scientific theories proposed for how the Universe began.
Another was called the "Solid State Theory".
Amongst the various theories, the Big Bang is currently most widely accepted because it best fits the scientific data available.
Over the years there have been numerous scientific challenges to the Big Bang Theory, so it has been and no doubt will continue to be modified, or even replaced, in the future.
But all of that will be based on scientific data, and the math that ties it all together -- not on blind faith.
Oh, dear me... Steady State Theory.
Where is my coffee? :-(