OK. I concede that by allowing FM, this technically a change in the rules by the governing body.

For clarification, the rule affects the manufacturers of radios, not users, as any user with the capability of switching to FM on their custom CB rig before the rule change, would not have beeen persued or charged with any enforcement action.

The CB band (outside of rules for manufacturers of radios) remains largely unregulated.

Its a free-for-all. With enforcement reserved for the less than once-per-decade extreme situation, like interrupting stations for long periods, causing complaints, ignoring warnings and using high-powered amplification devices to do so.