My opponent's space heater rescue is real, but it is one save against a whole category of new failure. A smart plug is a tiny computer with a login, a radio, and a vendor that may abandon it in two years. A dumb smoke alarm does not need Wi-Fi or a security patch to scream. The question is not whether any connected device ever helps; it is whether making every basic object internet-facing leaves us net safer. That is like locking your front door and leaving the key under a website. Convenience is the product. Vulnerability is the subscription.