By cheepos, I assume you mean non-programmable ones? I don't see the problem. Sure, in most cases there are many times when you want to deviate from the programmed temps. But that really isn't much harder to do than with a conventional thermostat. All you do is push an up/down button to get the temp you want. And if you want it to remain there regardless of the next scheduled change, you just push the hold button. The obvious advantage to the programmables are that there are many times when having it do it's scheduled thing is advantageous. Like setting heat back at night and having the temp back up BEFORE you wake up in an cold house.
And I'd sure like to see the AC system that takes a house from 113 to
75 in 15 minutes. Even a grossly over-sized unit, say 2X, isn't capable of anything near that.