well... to be fair, the plastic pan has been abnormally represented in leak complaints and subsequently replaced with the metal pan in production changes. The issue is that trucks that came with plastic pans, will get warranty replacement plastic pans until Ford runs out of supplies of plastic pans. And also, some of these leaked from day one, some were leaking before the first oil change. If the factory with their highly trained line workers and fancy tools can’t assemble these without causing leaks, the chances of leaks are significantly higher from less well equipped dealer mechanics.
I’m sure some of the pans are leaking from talking chimps wielding wrenches, but the design appears to have been not robust enough on the plastic pans.