We're getting to the point where simple devices without the full range of security capabilities just aren't tenable anymore. Wireless devices should be securely keyed. The protocols cannot expose the key. They should be immune to replay attacks and eavesdropping. They should also be immune to simple jamming.

It's like how people in the country in most cases can have a wood fire, and it's no problem. Get to the population density of the city, and backyard wood fires become the major source of particulate air pollution. It's like how in the early days of electricity, there were to GFCI safety devices and everything was just bare conductors on ceramic insulators nailed into wood. We're not in those days anymore.