Suppose that Ghostty bans an account from contributing if it fails this test.
That still gives the next slopper a chance to waste the same amount of time. People used to call this the "one bite of your apple" attack -- it's only fair to give everyone a chance to prove that they aren't malicious, but if you do that in an environment where there are more attackers than you have resources, you still lose.
Suppose that Ghostty bans an account from contributing if it fails this test.
That still gives the next slopper a chance to waste the same amount of time. People used to call this the "one bite of your apple" attack -- it's only fair to give everyone a chance to prove that they aren't malicious, but if you do that in an environment where there are more attackers than you have resources, you still lose.