Want to control your lights remotely or automate them? Use an in-wall smart switch. They still work as physical switches even if all your automation/smart home stuff is down. Guests don't need to know anything about the smart home, they can just operate them like regular switches. You get smarts "in addition to" the normal light operation that everyone in the world understands.
Smart garage? Hook into a regular, tried and true garage opener using some kind of remotely controllable relay. The button on the wall still works, the opener in your car still works, but you can have smarts in addition to all that.
Replacing regular bulbs with smart bulbs and then requiring a phone or internet connected voice device "instead of" a normal wall switch is insanity.
A camera that works only locally (dafang hacks + wyze), home assistant, zigbee/zwave for example.
To make a silly comparison, it's like buying digital videogames on a console instead of their physical versions, knowing you're trading immediate convenicence while giving away control, ownership and future availability.
I would have much less problems processing IoT if the "I" was scrapped and optional by default.
I guess I have an hard time understanding people relying on the internet at all.