Tom,
I think the other thing to bear in mind is that in the days before internet forums, and indeed the internet itself, it simply wasn't possible to publicly report an issue of any kind. If you bought a camera, lens, binocular, or in fact anything and there was something wrong you simply had to take it back to the dealer/shop where you'd bought it. Generally, actual (as opposed to internet) retailers selling such specialist products were keen to build and maintain a customer base so after sales service was personal and generally excellent. Problems were sorted and nobody thought too much of it.
I feel that we've become victims of our collective desire for the lowest prices, made possible by international sales via the internet. Personal after sales service goes out of the window to a large extent when you cannot go back with the product and have a face to face conversation with the person that you bought it from. Then we resort to sharing our issues online to get the friendly personal advice that we want and need and then the issue is there for all the world to see. I'm not convinced that the actual products are any worse than they ever were, it's just that the problems are out in the open.
Of course, the above is a generalisation. I've had excellent after sales service from dealers whose doors I've never walked through (although things were still much more difficult than they would have been if I could have done so) and I know a lot of people still DO buy from physical shops and dealers, and long may that continue, but nonetheless I think the internet can have negative effects on our buying and after sales experiences, as well as the obvious good ones.