1340
Nobody says it anymore
(startrek.website)
I've heard it explained that "hey" used to be more of an urgent way to get someone's attention, rather than a casual "hello" like it is now, so it sounded rude to some older folks.
I only ever did that when typing via controller. If I had a keyboard I used full sentences but quickly. Sometimes the speed meant lack of proofreading though and weird things have been said.