One of the nice things about Haskell, is that changes that are disastrous in other languages are not necessarily disastrous.

I think any notion of blame is really irrelevant here. The discussion was whether this kind of feature is useful. I think you implied it wasn't, because the cases it were useful in are those in which you did something wrong. But that does not follow at all. It is very possible one is to blame for a horrible mistake in the codebase, and that it still needs and can be fixed. This feature makes that fix cheaper and more practical.