Well, if you excuse me on here. Who said those need to be pirate vessels? What if some guys just logs lawful characters and pew away the Core 1 base, because they are bored? There were moments like that, as far as I recall.
I just pointed out that Core One rules leave the base open for trolling and harrasing - as violation of the actual rule 1.2. - while it is legit within POB ruleset.
Scenario:
Trollplayers wait for base guys to log out. Then they log onto pirate characters or other characters and remove the base, either covering themselves with Core One ruleset or House Law, in which "every unregistered base is illegal".