Issues such as the ones raised in the article have been discussed
before, although possibly over in alt.support.diabetes.

If you don't have restrictions in your workplace preventing you from
testing and treating your DM, then there's probably no need for you to
do so.  For those who are forbidden to eat at their desks or test or
administer insulin or work steady shifts, then they may need to seek out
the disability label in order to be allowed to treat themselves
appropriately at work -- and to keep their jobs when their employer
knows they have DM.

Priscilla