So my theory is there is not enough information known about electric scooters in NZ to properly regulate them at the moment.
The max output can't be measured by the controller (of which the Zero 10X has 2 x 25A) but rather the power output of the batteries which isn't obvious by just looking at it (Zero do a 18A and 24A version) Also if riding on a half-charged battery, the output if going to be quite a bit less (along with peak efficiencies as others have mentioned) so it is a very grey area.
Interestingly Falcon have an export model (full power) and local version of their scooters which complies with Singapore regulations.
I have a 10X 18A which I use everyday for work and it's awesome. I've hit 60km/h on the flat and it still has some left to go but on average I tend to do 40km/h max so as not to draw too much attention.
Is there not a risk, though, of the Govt responding to this situation by simply banning all scooters from the road, and placing some arbitrary (and difficult to police) speed limit for scooters being used on the footpath (or even ban their use there too)?
I have to admit that the risk central and/or local government may do something stupid in relation to e-scooters does worry me a bit, given I've forked out nearly $2k for one to use as my 'daily driver'. Let alone what that would do to e-scooters' role as part of solving our transport (and emissions) woes...
I wouldn't be against the idea to limit the speed rather than power as it could at least be controlled somewhat and people can get around and not be restricted to just traveling on near flat surfaces. 300W isn't usable around hilly NZ anyway.
I ride along the road rather than path and obey road rules mostly (even when cyclists run red lights around me constantly).
The best thing the government can do it change rules around cycle lanes and encourage e-scooters to use them instead of the path.