Previously you claimed that it was a violation of regulation. "SOP," isn't regulation, and the regulation isn't criminal law. It's administrative law. If you're referring to company policies and procedures, one can hardly blame that on regulatory oversight. I know of no "SOP," whether specifically formalized in a general operations manual or otherwise by company policy, which dictates that a headset can't have bluetooth capability.

The introduction of "felony" is irrelevant. When you previously stated that federal law and Part 121 had been modified to prohibit a headset with bluetooth, perhaps what you meant was that neither was true, but it sounded good to say. If not, it's worth pointing out that neither is true, regardless of how it may sound to say.