Yeah, there's been timed feeders longer than there's been wifi, and I'm sure the first had old-school and modern, but it's been long enough people stopped wanting to pay for both.
But even doing what your talking about, my wifi thermostat still works without wifi if I walk over to it. My smart plugs still do their normal timed schedules.
An internal clock and a tiny piece of flash memory is all it takes.
But that's like $0.05 per unit, and a corporation will always cut that corner.