I have a few boot scrapers posted outside my door; never had one that was curved, heck I do not even think my 16.5 would fit in it, and if it did it sure does not bend to the contour. Also it seems lightly joined to the base, I would give it a couple years and it be busted. But also a a FOD tray, then it should be mobile and not mounted.
No idea what it says, but I do not think it is a boot scraper.