After that we got what? Less noise, improved fuel efficiency, increased range? I started flying about 25 years ago. I don't remember that flights were noisier. As for efficiency and range, I don't give a hoot. I care about ticket prices and flights happening on schedule. Prices have gone up, innovative fees piled up on top of them, delays are oh-so-common. As for safety, 25 years ago planes were crashing about as frequently as now. For regular people like me, the advances in safety were imperceptible.
You also hear about every single one of them now, partly as they're rare and exciting to the media and partly because the Internet makes everything "nearby", whereas in the 90s you'd have probably only gotten a quick radio segment and a mid-paper article on a remote air crash.
https://commons.wikimedia.org/wiki/File:Fatalities_per_reven...
In the 60s, 70s and 80s, flights were expensive and rarely taken by regular people. Now, they’re readily accessible to most everyone.
That’s not to say it isn’t disappointing! Just that your marginally-the-same flight experience is that way because improvements in flight are designed to enhance the lives of executives and investors rather than passengers. If anything, they’ve made the flight experience worse for you and me as much as we'll bear, while improving flight objectively at the same time… because profits demand ever more growth.