I heard someone say e-scooters being parked on the middle of walkways is an example of why #anarchism does not work.

It is not a good argument because the chaotic parking is not only a result of companies exploiting a lack of democratic legitimized rules but also a semi-anarchist concept in a non-anarchist society that is used to having that stuff already sorted out and sanctioned if not done correctly.

In a democratized society we would depend on solving those problems in a collaborative way.