The average consumer doesnt even know what CEA compliant means. They are uneducated.
If they knew what CEA compliant meant they would know it only means that an amp does at or under a certain THD rating at 4 ohms. That doesnt mean it stays at or under THD at 2 or 1 ohms even if its rated at those impedance as well.
That means an amp can still be over rated and CEA compliant if it maintains THD. If an amp is over rated you dont get what you think you are paying for. Its a scam to trick people into thinking CEA actually means something significant hence this thread.