Blame is for me at least a fairly infrequently used operation and there's really not much else it breaks unless there are other active branches at the time. I don't find blame information that valuable and would argue that most uses are in fact counterproductive (it's in the name - blame).

You'd only have to do it once, all changes past that point would be good assuming you set it up in your IDE automatically or in your precommit. So if for some reason you needed to go back a long ways and blame something you could always check out back past that initial styling fix and see it.