seems a bit confused
Firstly, there is nothing special about a hoverboard in the way it utilises batteries. It is not any more or less explosive than a laptop or an electric bike.
Unlike lead acid (the more common predecessor for electric bikes and scooters), you can't just pump in energy at full pace until it's full as the reducing efficiencies allow runaway waste heat to build up. So it is quite conceivable that cheap no brand companies based, er, in countries that lack strong safety regulation frameworks* would take dangerous shortcuts.
Blaming the product category is counter productive**. We need to call it for what it is. Products from specific vendors do not meet our electrical safety standards. Those products must not be sold and already sold units must be urgently and actively recalled.
Now I'm not drawing the same conclusion as the subby here, at least not from the article itself. All I am seeing is (from an IANAL perspective) is that the manufacturers who don't meet these safety regulations can't sell their wares here and people who otherwise acquire the said wares can't use them here. Makes sense. Li fires aren't much fun.
*which suddenly become very good once it causes embarrassment for the establishment.
**the legitimate vendors get caught up in the ban but the fly by night ones that are causing the problem are trading with a different name later the same week.