Which is why the Internet Archive, and similar, more specialized services are so important.

We generally consider it a good thing that written falsehoods can be amended to instead say the truth. That's what we do with book errata and editions too.

The bigger issue is the attempt to rewrite history as if the falsehood was never there, which is in my opinion a much bigger lie. As I see it, this can be handled by third party archives and by us as a society actually attaching repercussions to such outright lying.