If you don't use the orbital selected mode, the orthogonal cameras works as they should, so nothing is taken away. Preventing it is taking away something which someone might actually use (not sure for what though)

Think of how much you hate it that in V4 the axis scaling for bodyparts has been made hidden. This was to prevent accidental use of those scale dials. But for someone who knows what they are and do have a use for them (think of fitting), it is a pain to have to load scripts to enable them again.