It does, however, mean that any type of appliance that you might wish to plug in uses the same plug, regardless of what power level it wants - quite a good example of It Just Works, even if the price you pay is huge plugs.

Of course, that does break down a bit when you get to fuses, since you now have to worry about using different capacity fuses for appliances with different expected maximum power draw (3A for most things, 5A for the odd high-power small appliance, 13A for anything involving a heater...)