That isn't really accurate. An Aeotec Smart Switch 6 for example consumes <0.8W, while a single LED lamp consumes 4-20W depending on brightness. So the lights i

That isn't really accurate. An Aeotec Smart Switch 6 for example consumes <0.8W, while a single LED lamp consumes 4-20W depending on brightness. So the lights in a single room could reasonably be consuming 20-100W, vs. a smart switch consuming <1W. You don't have to optimise your usage much to totally offset the power cost of using smart devices