If the sig campaigning issue was that bad, wouldn't it make sense for mods to delete the junk posts made by these spammers? I'm sure there are enough moderators to police the problem.
The issue there would be the optics that mods are censoring members. Think the issue should be handled by a member assigned to the signature that shows a unbiased view point. Hilarious does a great job but ideally it would good if it was not a mod to limit potential conflict of interest.