Building on top of the gaza pyramids doesn't destroy the original, it changes it.
Sequels absolutely can affect the integrity of the original by expanding the universe of the plot in ways that it's original design never intended or the way it was originally perceived.
Yes, but it's a fictional universe, so you're free to disregard any elements of it that fall outside of your favorite entries into the canon.
If you think that some new works expand the universe in a stupid direction, there's no reason you can't pretend they don't exist and still derive the same meaning from your favorite works.
> You're not obliged to pay attention to any of the sequels.
That statement does nothing but detract from the conversation. Of course I'm not obliged to pay attention to any of them. I'm not making the generalization that all sequels are bad.
No but you are saying that a bad sequel can make the original worse. I don't think so. The original is still there, untouched, and you can hone your skill at putting yourself in the context in which it was originally released.
Sequels absolutely can affect the integrity of the original by expanding the universe of the plot in ways that it's original design never intended or the way it was originally perceived.