Earlier quoted context omitted.
Sure, the output of the culture industry can be compared to the output of any other industry. That's why it needs to be preserved, especially if it's harmful. We keep museums not only to be wowed by amazing artifacts, but also to know our past, what life was like. And for the same reason, everything from Hitler's radio broadcasts to doge memes is worth preserving. See my other response in the thread.
I think I agree and disagree with you. I agree with the value of preservation, as a hobbyist collector and archivist myself. However I agree with the notion that all culture and aspects of a particular culture are of equal worth. If I had to choose in a house fire, I'd take a hard drive full of my favorite youtube videos and movies, and leave behind the hard drive full of mobile game advertisements and mid level mark…
I never made such a claim.
The problem is that everyone has their opinion on what needs to be preserved. I might not care at all about what you have on your hard drive, and vice versa.
Archive and libraries aren't Eternal and Forever Storage. Future archivist might as well prune them (as they do).
However, at the current time we don't have enough data to decide which things are worth preserving, and which are not.