Have you stopped to consider why you can’t explain it better? Perhaps the reason is because you’re wrong.
Your toy example does not show the issue you think it shows. You’ve moved your cleanup block away from the context of what it’s cleaning up, meaning that you’ve got variables leaking out of their scopes. Your cleanup code is now much more complex and fragile to changes in each of the blocks its cleaning up after.
You tried to use your toy example to show A is better, but then we showed that actually B is just as good. So fix your toy example to show what you actually want to say, because everything you said so far depends on you setting different standards for each scenario.