This is progress, but in a small part of the power supply. It looks like they have a charge-pump type power supply, and they turn off the charge-level checking circuit except during polls. They also adjust the polling rate down when not much is happening. The question is how fast they can respond to a sudden demand for output power. Can a sudden load drain the capacitor before the input side notices and pumps it up again?

Excessive standby power consumption is a big problem. There are lots of devices, especially TVs, which consume far too much power when supposedly off. (Of course, some of them are constantly listening to you, phoning home, and possibly spying on you.)

One of the more important recent developments in switching power supplies is the elimination of electrolytic capacitors. They're the biggest point of failure. This is already happening in LED lightbulbs.[1][2] Electrolytic caps inside LED lamp units are the primary cause of failure. They only last about 10,000 to 20,000 hours, while high-output LEDs are good for 40,000 hours. If a power supply can be built with lower capacitance, ceramic capacitors can be used. That makes it possible to get the lifetime of all the power components above 100,000 hours, so the LEDs will burn out first.

[1] https://hub.hku.hk/bitstream/10722/164083/1/Content.pdf [2] www.rle.mit.edu/per/wp-content/uploads/2014/10/Chen-Electrolytic-Free.pdf