It's typical of popular accounts of Evolutionist and Old Earth conclusions: They do not bother with giving you any of their reasoning, it's only their conclusions stated as absolute fact.
"Absolute"? I don't remember that ever being the case.
Perhaps you overstate your position, or maybe you are simply projecting? If anyone is an absolutist around here, that would be you.
What is presented to the public is generally the current state of knowledge about the universe. I don't suppose you'd be as concerned if the 'six-day creation/global flood' story was presented as fact, would you?
I'm interested in the evidence for this - I can't seem to find much.
Well, it's not really a burning issue in geology. I can give you examples of rapid formation of each rock type, but they all require very specific conditions which don't control the deposition of the entire crust.
The Hawaiian Islands have been developing for tens of millions of years but any given rock body probably forms within minutes to thousands of years.