Of course the reality is between. Whenever something experiences mass adoption, of course quality will decline, e. g. airplane seats with mass adoption of flying.
But so, so many things improved dramatically in quality. I could give you endless examples but just think about cars.
Despite anecdata to the contrary the reliability of cars increased over the decades.
Most 60s cars had rust problems after a couple of years. By the 80s this was largely solved.
Most 70s cars had all kinds of mechanical problems but by the 90s this was largely solved.
Most 80s cars had lots of electronics problems but by the 2000s this was largely solved.
Sure we still have software issues and the whole transition to EV's makes has us deal with new problems, but do I want any of my old cars back? Hell no!