Ansel Adams, and other highly regarded photographers had all of the above and produced outstanding results. I'm more familiar with the work of O. Winston Link who, in the '50s would set up numerous flash bulb units, wire it all together, and take a nighttime picture of a passing Norfolk & Western Railway steam engine and train going by. To my knowledge, many of these were well thought out and pre-staged with vehicles, people, and even 'set up' with Norfolk and Western Railway so that the train crew would not be startled by a blinding flash of light. Remember, back then, ASA (ISO) was like...25 or so.These men (and women?) were true artists................ The results they produced were 'art' in anyones' book.
This is the same as saying that all composers from the 17th century were great because Bach and Handel are well known and attributing their success to the fact they has to write all their scores by hand. Like photographers, it was their talent that overcame technologic obstacles.
This is like calling a bug a feature.
The reason they did things the way that took time was because
they couldn't do it any other way. The reason we think of them as 'artists' is because it is only their work that has survived. Probably 999 out of 1000 photographers who worked the same time-consuming way have disappeared.
In point of fact, if you look at AA's work, the vast proportion of it was boring and disposable. Technically perfect but otherwise uninteresting. Unfortunately, once anyone has put a great deal of work and time into something, it is difficult to discard it as unworthy.
The problem is, in todays' world, everyone wants 'instant gratification'. Even if we have the TIME to 'see' a picture in our mind, it's hustle, hustle, hustle to see the result whether on a computer screen, or even the LCD on the back of the camera. There are still those who actually TAKE THE TIME to pre-visualize, set up, stage, whatever, and get 'the shot'. Not a flurry of 6 FPS shots of something with auto-bracketting everything...but one shot! Just like was done 60 years ago. I'm sure many here saw the video about a month ago of the man who constructed a giant camera inside his truck and the film plate is something like 30"x48". For him, it's one well-thought out shot or, at most, a small handful of shots of a particular subject. How many of us actually have such vast amounts of time to do this? One can only wish that we did.
Then, enter the event photographer. Whether 'the paraparazi' of the famous, the press, or even a wedding photographer, the perfect 'time' to make a shot is perhaps, at most, 2 seconds to get 'the money shot'. Everything else is just 'pictures'. Considering a wedding photographer, experience has told them where to be, what the 'money shot(s)' are, what settings for a dark church, or a beach, etc. It's a learned process. Yes, there's some pre-visualization, but it's more in knowing what's needed to get the shot properly exposed than what the finished print would look like.
Again, you are mistaking the technology for the result.
Since you made a generalization, I feel free to make one. I think that if I asked 1000 glass plate photographers if they wished to have an apparatus that would weight one hundredth of their current load, would take many pictures and by means of which they could edit and develop these pictures while sitting at a desk, drinking coffee, my intuition is that 1001 would try it.
AA used a Nikon FM and was a consultant to Hasselblad until he dies, using all their equipment.
So the technology, which makes some actions possible, has also changed even the process by which we compose. Because we now can capture a scene quickly, we have trained ourselves to compose our thoughts and actions more quickly. Because I can the freedom to change, expose, crop and edit with a freedom that didn't exist formerly, now I can capture scenes that photographers could conceive of capturing 50 years ago.
If you don't think that the new freedoms have increased the amount of wonderful images, you haven't been looking at the Internet. If you don't think that the freedom to edit and compose has increased the amount of wonderful images, you should look at any un-culled collection of slides from 30 years ago.
Yes, we have gazillions of bad images because the technologic barriers to photography have, in the main, been dissolved and the Internet has made the vast amounts of mediocre photography visible. But don't try to pick out one variable, 'time', from the past and blame that one factor for all the changes.