I don’t think you’ve missed anything. Reptiles are particularly good for mobile zoos as many don’t stress easily and don’t require (or in some cases actively hate) large enclosures. Tegus, Monitors, and more intelligent lizards actually seem to enjoy, or at least show interest in, people and new places.
As long as the keeper is responsible and takes good care of the animals I don’t know what exactly the problem is
Oh boy! Not all ads! Oh yippee! I have been blessed on this fine day! 🥰