We can just abolish any so-called "ban evading" rule because it's useless in any case.

A spammer or scammer will not care for it but members trying to improve after getting banned, honest from a new account will be targeted.
Plagiarism should simply result in a ban - no discussion. Plagiarism is serious violation.
Accounts engaging in plagiarism need to be trashed.

But after plagiarizer accounts are trashed, a new chance should be given by starting a new account.

We do not nee any strange so-called "ban evading" rule.