While thinking about this it doesn't seem that strange to me that they try to denounce the other biblical maps, now that they have produced their own maps.
In the past when some dubbies were actually interested in the geography of the bible they had to turn to maps produced by 'babylon the great' which in turn also exposed these faithful dubbies to other views on bible doctrine. My guess is that now, they are encouraged to use only the ones provided by the 'slave' and cannot use the looking-for-maps excuse for snooping around in babylon the great 's library.
Just another information control tool.
Anyway, to most dubs these maps are not interesting at all. Much like the calendar....boring.
Greven