Back in the 1960s, when I was a tween- or teen-ager, I read every copy of Analog Science Fiction/ Science Fact I could put my hands on. You can now read lots of those stories on-line (like at https://www.freesfonline.net/Magazines2.html). Some of them have stood the test of time, but some are really really bad. John Campbell, the editor of Analog back then, was racist, and also convinced that smoking tobacco was a Good Thing. Many of the stories were written (by others) to convey those ideas; it's almost unusual for lead characters not to light up a cigarette.

It will be interesting to see how much of today's scifi holds up half a century from now---not because the science is wrong, but because the moral qualities will be judged outlandish.