My usage case is more mainstream - I want to be able to switch on a plugged-in fan to circulate the air better whenever my forced-air central heating starts to blow, and switch off the fan when the heating stops. This is generally a win for efficiently heating a room - particularly if you’re like me and have the output registers in the ceiling (a common design in the South of the U.S.). Without a fan to circulate air vertically in the room, hot air will tend to just pool at the ceiling.
Ideally, in addition to controlling smart plugs, I would like the AC/heating system to be able to control the ceiling fans which I have in various rooms. I have heard rumblings in the past of Wyze producing smart switches which I expect will be usable for that. Meanwhile, being able to control Wyze Plugs would be an acceptable work-around. And yes, I now there are some smart ceiling fans these days, but it would be a lot of expense for me to retrofit to those - Wyze Switches (assuming they arrive some day) would be a much simpler and cheaper option.