Hi,
I don't see an issue with any of your points, there.
Several years ago, when I saw that multi-accounting is legal, and many are doing it, I said: OK, I'll make a few more accounts on different servers, make them fat, then graveyard them and bring them to my server: all legal, with IP sharing, no contact. Then, I just started collecting woods from islands and donate with the secondary accounts.
Now, since I have multiple accounts, what is stopping me to also gather piracy points and help a member of my alliance, not just with the main account, but with all of them?
The problem you are pointing here is not with the multies involved in piracy (like explained above), rather with the players having TONS of multies and controlling them through VPNs and basically doing all of this for himself. This is the problem.