Depending on your country, your consumer rights outweight Apples "warranty". The product is NOT fit for purpose if there is no other way of restarting the device should a firmware update or install crash (which happened to me).
It is NOT acceptable to pay extremely good money for a streaming device (top end) and not be able to get three-five years out of it absolute bare minimum ... is poor design, ability to handle a base image, or dual image should anything go wrong, is NOT the issue for the consumer.