So you're suggesting that in the past 50 years V. Exanthematicus has gone through an evolutionary spurt and re-adapted to a vertebrate diet???
Really? Thats the only reason you can come up with that explains why the information is outdated. I read a book that was published in the 1960's saying small wooden boxes with just a lamp over top was fine for all snakes. Oh and they said hobbyists could keep their snakes on a diet of raw strips of meat bought from the grocery store.

It is not becuase they have evolved, but because your knowledge and research has evolved. What we thought we knew 50 years ago is almost comical now.

Old research becomes outdated. We have researched, studied and observed new ways of keeping our herps, and for the most part these ways are better and help our herps to thrive.