Am I taking crazy pills? Ban the user, or they’ll keep posting spam. Vet your applications like a valid instance instead of letting any spambot create an account.
You are not taking action if all you’re doing is removing posts. You are handling this in an entirely inadequate and incompetent way, and you’ve made kbin a blight on the fediverse. Get your shit together.
Do you seriously believe that it’s a matter of individual accounts, and banning a user solves the problem?
It’s certainly better than allowing these accounts to continue to post harmful spam. Then when people sign up, there should be some red flags in their application that you can watch for. It’s not like these spammers are highly intelligent. They’re pretty blatantly spam accounts, especially when they have literally just a number’s difference in their username.