Actually I think you're creating a false dichotomy. How many people are commiting dozens of "typo/fix build" commits and then squashing just those? In reality people are squashing the iteration process of "add an X, add a Y, remove the X because it didn't work, and add a Z instead of an X and Y" into "Add a Z"

If you're simply talking about removing "fix typo" commits, then just don't. Just ignore them. You don't need them, but someone might. They're not hurting you?