I do not find the evidence convincing.
It is clearly a fragmentary bit of mastodon. No skull to go with the tusks, much of the skeleton smashed.
So something smashed and separated the skeleton. There are many possibilities.
I recall a very similar analysis by Robert Audrey, in African Genesis. Eventually it came out that all could be explained by leopards preying on early hominids and stashing the carcasses in a tree that overhung a cave mouth (which would be a very popular site for ancient leopards).
Imagine a big tree with broken limbs, caught in a flood and smashing up and down on a bit of mastodon carcass, for example.
Imagine that your mechanism pushed a mastodon tusk many feet absolutely straight down into the ground ... One of the possibilities are the man-made round stones found with the bones, and that the one inch thick bones had the marrow removed by use of said stones. That’s just the neighborhood smilodon, you say? Using tools ... clever cats, eh?
Whether you are convinced or not, it seems that many of those with credentials, who have actually looked and studied this find over the years, do no dismiss this find out of hand as you have sight unseen.