OK what's wrong with that definition? There is a lot of truth in it (at least at one point in time). When I was in boot camp in Orlando in 1994, OBT was the only place that was off limits to recruits during liberty (for the same reasons listed in the definition).
It may not be true for all areas of OBT, but it is what it was known for. (namely the Booby trap, not that was a building design :thumbup: )