but this horrible rule!

Alternate Accounts
On Polytoria, you are allowed to have multiple accounts ("alternate accounts" or "alts"), as long as they follow some additional rules:

You may not have more than 5 active alternate accounts at a time.
If one of your accounts is banned or punished by a moderator, you may not use any other account during the duration of the ban, even if the ban was initiated on an alternate account.

So
Coinfarming is allowed???

???

“Alt farming”, “brick farming”, and “alt grinding” all fall under the umbrella of a process where users create alternate accounts to deliberately gain an unfair advantage over other users. Attempting to use alternate accounts to pool our free daily bricks into a single account/group of accounts/clan is not allowed and will result in a poison ban of all your accounts, and it may even result in a permanent restriction from creating new accounts in the future. Additionally, unless otherwise stated, any form of free promotion or event reward is available on a “one per person” basis, and using alternate accounts to gain an unfair advantage in these types of official events or promotions is not allowed.