The article documents recruiting Lyft drivers by riding with them, which is neither unethical nor illegal. It doesn't document cancelling rides, which would definitely be unethical, and should be illegal.

I thought on HN we call working around outdated or laws we don't agree with "disruption"?

Unnecessary generalization. Disruption may or may not have negative externalities. In fact, many externalities of disruptions are positive.

In fact, disrupt and sabotage are synonyms.

No major thesaurus lists sabotage as a synonym for disrupt. A couple have disrupt for sabotage.

Whose ethics book says hiring employees from competitors is wrong? Pixar's?