> How do you enforce this?

It's not impossible - right now there are all these low-effort PRs. If the PR is indistinguishable from a normal human-written PR, that addresses some of their concerns.

In any case, a rule or policy that can be worked around is not a reason to do away with that rule or policy.

I mean, if we only ever catch 10% of murderers, do you really think it is reasonable to remove that law from the books?