Interesting topic
Though I do not totally agree with you as I think this is mostly user related.
These days you do not have to fully understand rendering, modeling and texturing as in the past.
Things have become really user friendly. As a grandpa I remember beta versions of Brazil RS with all those technical names for each and every shader, it was a pain in the ass figuring out the meaning of it all. You had to make some research, read the docs, understand the way real light work, the way real materials work too, and so on. You had to learn what makes a realistic picture by observing what's happening in the real world. This was a learning process.
Nowadays everything shader for instance is supposed to be physically correct, so why bother ? Tick the right boxes and the software will do everything for you the right way, one can think. The thing being you're totally missing the texturing part in this case. The learning process is gone.
I think you get my point, people have gotten lazy because they can afford to, and still manage to produce acceptable renders in the meantime.
I'm not being nostalgic at all, I love the way everything is now easy to use physically plausible so you don't have to bother with energy conservation for instance.
I've seen some recent renders with Corona that totally blow me away. The science behind rendering has never been so accurate.
Plus i think you have to consider the way things struck you at the very moment you saw them. This is very misleading. Some of the pictures you post here seem average to me.
I still think my first IBL render of a teapot on a plane is mind blowing, but you would certainly consider it worthless
