Joe -
no, I don't think we will ever get back to a bunker being a hazard.
Do you remember the scene in The Godfather, when Tom Hagen is having dinner with Hollywood studio-head Jack Woltz, and he's telling him why Johnny Fontaine would never get the role in that war picture?
"And then Johnny Fontaine comes along with his olive oil voice and guinea charm and she runs off. She threw it all away just to make me look ridiculous. And a man in my position can't afford to be made to look ridiculous!"
Back in the 40s and 50s, only the big shot studio heads [metaphorically speaking] felt that they couldn't afford to look ridiculous; professional golfers back then weren't yet so full of themselves or earning enough money to be so pretentious or ego-centric.
By the late 1990s, that had certainly changed, and professional golfers were making millions, and so we got tour players convinced that they couldn't afford to look ridiculous either, under any circumstances but especially in bunkers/hazards.
[My theory: tour pros don't mind struggling at a US Open course that is 7600 yards long and has 20 yard-wide fairways because they know that we know we'd get killed on a course like that; but if, on the other hand, they muff a bunker shot, they know there are 22 million hacks thinking "geez, even I could've done better than that".]
And now, in 2016, after decades of unrivalled economic growth and the emergence of "the selfie", we have entire generations of golfers, from beginners to 60 year old club champions, firmly believing that they can't afford to look ridiculous either.
And they are ready to spend a fortune to make sure they don't!...
Peter