Ruling: Thumbprint scan is like a "blood draw or fingerprint taken at booking."
The legal situation is more complex and nuanced than the headline implies, so the article is worth reading. This adds another ruling to the confusing case history regarding forced biometric unlocking.
This is one of many reasons you should use a password of some kind that you keep inside of your head to unlock your phone rather than a biometric that people can use to unlock it against your will.