DaMoshe is correct. The factory seasoning is heated in an oven, and while applied as a liquid, it quickly congeals. Also, it is oil, whose liquid status is highly questionable to begin with.
I am highly suspicious of anyone who says it only needs libun kal or hagalah. I am aware the cRc of chicago says that, and I have emailed the author of the article as well as others in the organization. He did not respond.