Reread my post-20. The point was that the hagfish is not a challenge to Evolution because, as the article explains, it is a creature that doesn't "have hard parts, like bones and hard teeth...{and therefore} it’s really difficult for them to get preserved into the fossil record.”"
That point clearly removes the subject of the article, the hagfish, from any debate over the gaps in the fossil record of creatures with "hard parts, like bones and hard teeth" which are more easily preserved in fossils that make up the nearly all of our recovered fossil record.
This is an absolute truth no matter how rare it is for other creatures to leave fossil records or how meaningless you believe it to be.
Thanks for clearing that up.