Surely this is a transparently motte-and-bailey argument. Obviously no-one would dispute that it's good for government agencies to use clear language, and avoid

Surely this is a transparently motte-and-bailey argument. Obviously no-one would dispute that it's good for government agencies to use clear language, and avoiding certain words might serve that purpose in certain cases. Those points are completely orthogonal to the fact that it's patently terrible for an administration to attempt to tell its own subject matter experts which words they can use.