CLAIMS ADMINISTRATORS

Given the nature of this forum, this question may sound asinine, but just how difficult is it really for dealerships to hire qualified warranty administrators? I have seen a number of WA's who claim to only know one line of warranty. Just how unusual is it for a WA to know seven or eight manufacturers' systems? This is just a curiosity question, not a fishing expedition. I personally have been surprised at the lack of depth of knowledge, as related to me by service managers( not the one I work for). As a WA with experience with GM, Ford, Chrysler, Mitsubishi, Toyota, Hyundai, Isuzu, and Nissan, I have been shocked by comments related to me, such as "I only do (fill in the mfr.), and I'm not going to learn (fill in mfr)." Is this a common situation?