Earlier quoted context omitted.
Here's an idea: let's assume most people aren't idiots. That way we don't have to ban an entire sweep of activities on the basis of a marginal edge case.
> let's assume most people aren't idiots That's where you're thinking breaks down though. There are a large enough portion of idiots to ruin things for 'the rest of us.'
And yet countless actual cities manage just fine without draconian anti-postering policies.