thats only for evidence/prosecution for fraud/criminal intents. If one say's "NO WAY I said and printed that contract" ... "Lemmy check...oh! You did. Its your printer. Look!".
I think its not like "somebody gone to each..", but rather "... a good idea".
Preventing anonymous publishing is not a good idea, it is malicious.
Wishing to publish anonymously is not exclusive to those perpetrating fraud or other crimes. Privacy is important to a free society.