The issue with multiple accounts is complex and how they attend to it depends on the reason for the other account(s), how well-established you are on the forum and how you get to use the accounts. It's no news that there are some people on the forum who own their alt accounts and people know them but they do not care about it because they are established well enough, this is even as they join campaigns with it.
Also, the forum encourages people who do not want to express themselves with their main account to open another one to do so without issues. But there is nothing you can explain to some people, once you are not well-established, they would tag the account to render them useless on noticing they are alts if they couldn't get them banned for some reason. So this thing is partial and I urge them to often cool down.
But I don't know what anyone would be doing with three accounts, that's where it gets most ugly.
I don’t believe it is not a complicated situation, it’s just that some members make it seem that way. There are many reasons why one may create one or more alt accounts. For example, I have seen an account “LoyceMobile” on the forum, one can easily recognize that this account is owned by LoyceV. I would assume this alt is for his mobile device and is used to access the forum when pc isn’t available. The owner of the account made it a point to give a neutral tag to his alt indicating that he is the owner. Some people may not like this pattern because it ties their alt to their main account, which means they can’t cheat signature campaigns or troll other users without risking their main account.