There are a few things to point out, companies make NO effort to increase efficiency without a shove, sometimes a threat is what is needed. IE companies make the cheapest most powerful thing they can rather than go for efficiency, this is wasting power. EU threaten them saying they must be cut by 500W in the next 3 years, this leads to investment in efficiency increases of the motor and innovation in "sucking" up things using less power. They might not hit 500W reduction, but if they all find a new way to do it that saves 300W of power...... is that not a good thing?
There is overly anal regulation, but there is also industry laziness and targets/reductions being a driving force of genuine innovation. Who knows where this comes, somewhere in between most likely.
There is also some argument that as generally we use more and more electrical devices and more and more power then limiting the maximum output at any one time isn't a bad thing to consider. Long term we will have problems generating enough output. Likewise renewable sources are better at providing lower power levels for longer periods than peak output. IE you'd be hard pushed to run anything in your house with a 2.4kw solar panel system at the same time as a 2.2kw hoover, but a 1-1.5kw hoover and maybe the lights all won't go out at the same time.
Realistically in terms of draw on the grid, while everyone using half as powerful hoovers would reduce the peak draw from the grid, the likely increase in time spent hoovering would mean a higher chance of more people hoovering at the same time and a similar overall draw anyway.
Meh, I believe most of these regulations are very overly anal/pc/stupid, but I fully recognise most industries will absolutely ignore things like using more environmentally friendly production or efficiency without being forced into trying at the very least.
If no industry tries to improve efficiency, it genuinely isn't good for the environment, a shove is a good idea, actual harmful changes aren't a good idea.
But you'll find most of these things are targets that are somewhat unrealistic that force companies to try and then 5 years later the targets are adjusted to be more realistic, again it's a way to force the companies hand to try their best.