Some (Christian!) geology experts disagree.
https://biologos.org/articles/flood-geology-and-the-grand-canyon-what-does-the-evidence-really-say/
More severe and smaller scale folding is observed in the Tapeats Sandstone in the Carbon Creek area. Flood geologists say that such folding can only occur if the sedimentary layers are so recently deposited that they are still soft, not old, hard rock. As evidence they report that the folds lack fractures, which would be evidence of hard-rock breakage during folding. On the contrary, we show in our book that the folds are riddled with fractures and contain evidence of brittle and flexural slip within and between layers in the folds. These absolutely cannot form in recently deposited sediment, as claimed by flood geologists.
And
The only way to explain how these sandstone and limestone beds could be folded, as though still pliable, is to conclude they were deposited during the Genesis Flood, just months before they were folded.
Not only was the top of the Redwall Formation eroded during a long period of exposure, but also sinkholes and caves formed within the limestone. Many of the ancient caves eventually collapsed or were filled with the younger Surprise Canyon Formation. Caves form in solid limestone. If the limestone was deposited rapidly and immediately buried by overlying sediments as flood geologists claim, how could caves have formed at all?
Here is a direct critique of the article you referenced.
https://ageofrocks.wordpress.com/2011/04/17/rock-layers-folded-not-fractured-or-are-they/
"ROCK LAYERS FOLDED, NOT FRACTURED" — OR ARE THEY?
In an effort to provide evidence of deposition in rapid succession during the Flood (and deformation immediately thereafter), Dr. Snelling cites one of the most powerful arguments against his interpretation of geologic history. According to Dr. Snelling’s view of the Flood, we should not expect to find abundant evidence of brittle deformation in these rocks, but in fact we find it everywhere. Brittle faults and fractures are testament, rather, to the deep time behind geologic processes others have come to appreciate.
On the other hand, this guy, who apparently suports the article you posted, wrote a lot of books. So some of his words are bound to be true.

