There is a difference between an appliance being turned off at the wall and being on stand by. For example, our television is never on standby, but we do not ever turn it off at the wall, it isn't necessary. If it is not on standby it is off.
The same with the dishwasher. The plug for that is on the wall, under the worktop behind the appliance and I am not going to keep pulling the dishwasher out everytime I use it to turn it on at the wall and do it again afterwards to switch it off. When not in use my DW has no little lights on telling me the time or anything else. When it is not switched on it is compltely off and using no electricity, i do not need to switch it off at the wall.
Ditto all the bedside table lights, my radio, washing machine, air fryer and many other appliances. When they are switched off at the machine they are off and it is not necessary to switch them off at the wall, no electricity will be 'leaking' as a result.
The only ones with litttle LED lights are my microwave, and cooker, and those connected with my computer, and as the wattage of those tiny appliance lights is so small, and, again, the sockets they are plugged into are not easily accessible. I will use more energy and need to consume more calories - and food costs money - heaving appliances around the kitchen to turn them off, than I will save in my electricity bills.