Nobody is probably surprised anymore that appliances switched off by solid-state switch still keep sucking power from the wall sockets.
What is mind boggling is that apparently same inefficient system is often used for battery powered gadgets. The perfect example are UHF Walkie-Talkies. I use my set occasionally for reversing of car and I found out that unless I wish to replace it's three AAA batteries every time I have to put strip of paper between one battery and spring its contact. It works perfectly (patented in all technologically backward countries!) but you feel pretty silly doing it. And Walkie-Talkies are not fully ready for instant use, you have to "arm" them by removing papers.
To get Walkie-Talkies with the proper switch - which do not need paper nappies to be long term ready - you have to choose costly, high-powered ones. Cheap ones, sufficient for most situations are invariably with battery flattening solid-state switch.
Even quite costly gadgets may have this problem. My hand held VHF Marine Radio costing more than most UHF Walkie-Talkies has also solid-state switch. There is no access to the contacts in this case so I have to remove rechargeable battery pack thus making the set no longer sealed. For unit which is for many people important safety device this is IMHO inexcusable.