I find the phrase “you went to the extreme” in this instance to be kind of funny. It took no more effort to erase that whole continuity than it did to do any other story–no extreme required.
But some of it is the specific context in which these stories took place. Neither the 1959 Avengers nor the upcoming 1972 Mighty Avengers are quite super hero teams, neither were they a going concern. And some of it, surely, is that opinions can change over time–so what I did in 1999 I might not do the same way in 2009.