They didn’t save anything. The hardware they shipped supports it but Broadcom can’t be bothered to release a driver.
Already I have run across a plethora of devices that do not connect to networks in WPA2/WPA3 mix mode. Consumers who are not technically literate will return new hardware they buy that doesn't connect to their WPA3 enabled Wi-Fi network. Their iPhone and laptop connect to it without issue, thus it must be a defective device if your IoT thing won't connect to the existing WPA3 network.