We used to be. The rules changed about 10 years ago.
A lot of big appliances require higher power. Dishwashers, clothes dryers, fridges.
Some powers tools, drill press, plainer.
I never worry about load splitting,.
The benefit of the AS/NSZ plug, is that it isn’t much bigger than the US plug, but has a higher power density.









Kurzgesagt covered it nicely.