Ping!
The Burgess is Middle Cambrian and has rare fossils because it was formed in just the right conditions to capture sof features. There are a lot of other hard-bodied fossils in Early Cambrian formations, so the entire premise here is built upon a strawman - that there was some kind of void below the Burgess in the geological record.
See now, I always thought that the existence of fossils of strange forms of animals no longer in existence, at high altitudes in folded rock formations in the mountains, was more of a problem for young-earth creationism. Indeed it was just that sort of thing that made the idea of a young earth increasingly untenable to thinking people in the 19th century.
BTTT for later reading
I must have overlooked the part where the author provided any evidence to support id/creationism/ cdesign proponentsists
Could someone please be so kind as to explain how this article provides any evidence supporting the pseudoscience of id/creationism/cdesign proponentsists?