Chris, in post 2519, I provided links to 4 images of human renderings of creatures, each with associated legends in the cultures that produced them. Can you please explain why you think the "wild woman" mask represents a real bigfoot (even though it doesn't look or act at all like one) but these would (presumably) represent mythical creatures to you?
Consider the last one for example - a mask of the iconic Boris Karloff movie version of Frankenstein's monster. This creature appears in countless stories (written, film, animation) in the English-speaking world and where Shelley's text has been translated to other languages. We instantly recognize the brutish face, pallid complexion, and neck bolts as indicating this creature. There are annual festivals in which revelers don costumes of this character and act out pieces of its legend.
Now imagine that you're future-Chris in the year 3020. The 2015 Rise of the Machines wiped Anglo-American culture off the map, and only fragments of our once-rich history and art remain. There are only a few hundred people in the world who speak English and there is virtually no written record of our culture. There are little fragments here and there of our ancient customs, including Halloween. You find some photos of ancient Frankenstein's monster masks and they seem to resemble quite a bit one of the monsters from those ancient stories.
By your logic, you would conclude that Frankenstein's monster masks represent first-person encounters with real Frankenstein's monsters. You would base this conclusion on the fact that there was a folklore about such monsters and the masks remind you of the subject of that folklore.
Now do you see the problem?
Also in post 2519, I again provide examples of the actual point of considering the lack of bigfoot artifacts, i.e., ancient peoples used parts of all manner of creatures they revered. The point is not to look for art that you think resembles bigfoot, but to look for actual pieces of bigfoot among those items.