It's NOT an issue of bias in only looking at examples where old shit happened to last a long time. That's what the person I replied to claimed. It's horse shit. If that were the case, and new shit lasts just as long or longer than old shit, then the typical experience of someone with long-lived old things would be that the new shit is better. That's not the typical experience. If it were, people wouldn't bitch about new shit not lasting long.
I actually wonder about this a little, but not necessarily from the point of view you might think.
My parents got a washer/dryer set when they got married. The washer lasted about 22 years, the dryer lasted about 31 years. They were Maytags, which, 45 years ago, was a high-quality high-cost American brand. Maytag as a company/brand has been bought and sold about 5 times since then, and they are no longer a high-quality brand, nor are they an American brand any more, really.
I bought a house about 15 years ago, and bought a washer and dryer at the same time. Reasonable mid-range Maytags, actually (even though, even at the time, the brand wasn't what it once was). The dryer got replaced after about 11 years (after the third repair on it for a rusted drum roller, DIY repair cost about $20). Replaced it with an LG. The washer got replaced after 15 years, don't remember what I replaced it with, I think an inexpensive GE. I don't expect to get 15 years from either one.
Yeah, I complain that stuff doesn't last as long as it used to. But...
Part of that, really, is that the market has changed, and there is more low-end short-term crap available. This distorts the market, and makes it harder to be an informed consumer. It is harder to filter out the crap and only buy the high-quality stuff, and, frankly, because it is harder, the sales volumes for the high-quality stuff is lower, and therefore the unit costs go up even more, making the high-quality stuff even more expensive than it otherwise would "need" to be.
How many people are still willing to buy the high-end high-quality high-cost items that should last a long time? Fewer as a percentage of population than 40 years ago? How many of those (like me) are turned off by the high-tech crap that is needlessly added to appliances? (I avoided a washing machine with an LCD touchscreen display, because I don't expect that to work for 10+ years, and, frankly, I want real buttons. That touchscreen model was $300 more than what looked like an equivalent model with buttons. Was there a quality increase included with that $300 that wasn't appearent, that I missed out on becuase I didn't want the touchscreen? I doubt it, but how would I know?)
I do wonder if the problem isn't that good-quality stuff isn't around, it is just that the consumer can't tell the difference with all the identically-marketted cheap crap that floods the shelves and the Amazon pages. Read the user/buyer comments on the pages at Amazon, it helps avoid some of the crap... but not all of it.