The complaining was better, back in my day.
Reverse the premise though and you have an equally valid complaint. You have a certain segment of fandom, completely lacking in any historical perspective, that dismisses anything created before their lifetime. You have people who won't watch a black & white film, or can't appreciate music from a previous era, or can't sit through a film without 10,000 jump cuts and explosions.
Thing is, as you age, your perspective changes and a lot of what is produced for a mass audience starts to lose its luster and you look backwards, often exploring things you missed out on, or ignored in your youth. You start to appreciate them more, as you see them in a new light. It can breed some nostalgia in you and a tendency to think things were better back then. However, sometimes, that is correct, depending on the subject. Just taking music; in previous eras, you had radio stations that were independently owned and operated, that programmed their own music. You could get a wide variety of styles, depending on the programming director and the audience. As corporations took over the stations and the Reagan Administration repealed the FCC restrictions on station ownership, you got a homogenization of radio playlists and the same branding across multiple stations. That was hardly improvement, from the listener's point of view. Luckily, portable listening devices grew, at the same time, giving you an alternative; but, it had a tendency to restrict the growth of music, compared to previous generations.
Every decade has produced tremendous art; but, as you gain some distance and perspective, you tend to realize how much junk was also produced and how rare the good material really was. You start to wonder what you saw in a lot of things you thought were good or great. When I hit college and entered my first comic shop, I bought a bunch of stuff out of nostalgia. It ended up being about 30% that held up really well, another 30% was quaint, but entertaining, and 30% was just crap. That's probably being rather forgiving to some of the quaint material; but, I can appreciate the intent of the material and the younger audience it was aimed at. It's just like I can appreciate looking through an old storybook that is cute and look at Dr Seuss and still see the brilliance.