You keep moving goal posts, but ok. Yes heat pumps are more complicated. Likewise LEDs are more complicated than incandescent bulbs. Condensing furnaces are

You keep moving goal posts, but ok. Yes heat pumps are more complicated. Likewise LEDs are more complicated than incandescent bulbs. Condensing furnaces are more complex than gravity furnaces. And nothing is simpler than a clothesline. Higher efficiency usually involves higher complexity (EVs being an exception, although batteries themselves are pretty complex at tiny scales). What's also great about heat pump and other condensing type dryers is that they are ventless. With a regular vented dryer, each time you run it you exhaust several thousand cubic feet of indoor conditioned air, which gets replaced by outdoor unconditioned (hot, cold, or dirty) air due to the depressurization of your house. One way or another, you pay for reconditioning that air. Depending on how much you do laundry, your local climate, and the price of energy, a ventless dryer (which can only be electric, naturally) can save you a lot in energy costs by avoiding that air exchange.