Gentleman:
I tend to agree with you in some respects, in so far as saying, clients of old were not as demanding, or knowledgeable about the profession and certainly, the ease of travel, more writings on the subject, yes even web sites and without question, the construction process/techniques/equipment has all had a profound influence on ones ability to achieve almost anything the mind can imagine (of course, assuming the $ is there to back it up, and often it is!, right or wrong), therefore, anyone who has ever thought about the possibilities, suddenly decides that naturally it can be done, so then it must be a great idea, and dog gone it, if I'm the paying client, I will tell my architect and they will make it so!
I think we also have to realize that in the past, the social and economic climate was such that people didn't get all hung up on this sort of thing. I believe they understood, more so, the privilege to play golf and simply their expectation level was no where near the out of proporation state it is in now.
As I say, I tend to agree with you, but it does appears, at least from the outside, that over the past 10 years or so, with the exception from a few select architects, Dye etc., that clients have started to "loosen up", or perhaps become more respectful of their selected architect's ability and have given them more freedom to be truly creative once again. However, this trend if you will, seems to directed a small group of architects, dare I say examples such as Coore & Crenshaw, Tom Doak and the like, but even here, I may be speaking out of turn and they would disagree. This has been my impression and I hope I am right for I believe (and "minimalism" has nothing to do with it), that the quality of design improves as a result of it.