@Zodmod
I’m assuming you are referring to the tag changes themselves. Removing those from the history would mean that the revisions that happened would also have to be removed, which would literally leave holes in the database. I don’t know how Philomena handles that kind of information being fragmented or partial but I assume it wouldn’t be good.
As far as I can see the histories themselves are not any kind of hinderance. Is there a reason that you would like them gone, other than that they look bad?
@OliverHancock
You are welcome to your opinion, but doing that would not prevent it from happening again, and would be incredibly unethical - not least of which because it could very well encourage vigilantism.