Fedex is not lying. Fedex is mistaken.
I don't think FedEx is really either lying or mistaken, they're just providing a summary. Essentially, they're just warning you that you need to check the actual regulations before you export precious metals to the Czech Republic.
"An export license is also required when exporting toxic commodities, steel and steel products, precious metals, raw wood and wood products."
http://www.fedex.com/us/international/irc/profiles/irc_cz_profile.html