Technique has always been vanishing.
These days we have a certain attitude that if you don't understand the Holy Exposure Triangle, and perhaps how to use flash, or something of photoshop, or whatever, you're not serious. You're not connected to the work, you're just a dilettante. The technique that, somehow, informs the work and makes it better is lost on you.
150 years ago the same kinds of attitudes existed. They didn't care much about the exposure triangle, though. The techniques that connected you to the work, that made you not a dilettante, were things like the skill of flowing collodion across a glass plate. Exposure was, well, give it a minute or two, it'll be OK.
Computers followed much the same trend. If you didn't understand tubes and transistors, then you really wern't much of a computer person. How can you program the thing if you don't know how a half-adder works?! Later, you didn't really need to know about transistors, but f you didn't understand assembly language then you didn't understand how computers work. Then people stopped worrying so much about that, C programming was really the right level of abstraction to understand computers. These days it's about frameworks more than languages.
None of this means that people today are crappier than they were last year. Quite the contrary. Moving to higher levels of abstraction lets us focus on what's important. Certain minutiae may be an important part of how you and your friends relate to the work, but it's not how other people do. And that is OK. Not everyone has to use film to take a good picture, although for some people it is without question important.
I know a guy who didn't really find his voice until he started doing wet plate. The minutiae of that process are somehow important to how he makes a picture, even though, ultimately, the work is still about putting the camera in a good place, and pressing the shutter button at the right time.
This in no way precludes the possibility that another person cannot make superb work with a digital camera in Auto mode.