@Mike_C -- completely agree with your comments.
At the R&A sanctioned event that I attended here in India recently, all the amateurs had their range finders. They aren't yet sanctioned by the asian/india associations so many people were surprised by their use but it certainly made things faster.
A funny situation happened on the first hole where one of the players was about to tee off and his batteries died. He was frantically asking any/everyone if they had a "spare pack". Don't know which brand, etc. But do some of them have proprietary batteries?