This is like the people that thought TV and radio would bring Shakespeare and the classics to the general populace.
Instead you got weird reality TV.
It's a fantasy.
I think it's fair to say TV and radio did bring "Shakespeare and the classics" to the general populace, as well as a great deal more that was previously inconceivable. "Weird reality TV" is quite a small genre compared to the set of all audiovisual media.
More broadly, you seem to be saying that TV and radio have had a net negative effect on culture - that's a pretty big claim, though there are inarguably negative effects.
I don't think life extension would be fundamentally different from any other "life-improving" technology in that regard - some would have it and some wouldn't, and it would lead to both great things and dysfunctional effects. Impossible to predict the full impact ahead of time.
I don't think "immortality" is on the cards anyway, just living longer. Note that rich people already live longer anyway.
I'm saying it didn't have the intended or predicted effect.
"The Guinness Book of Records lists 410 feature-length film and TV versions of William Shakespeare's plays as having been produced, making Shakespeare the most filmed author ever in any language."
We didn't just get it - it's the definitive thing we got!
Predicted? It's impossible to predict perfectly. But a great many effects were predicted in one place or another - especially the negative effects. The Machine Stops, 1984, and Brave New World all deal with the themes of technologically networked society and mass visual media.
Because there's always going to be the unwashed masses that want low-quality sensory indulgences.