Or just buy a decent light from a UK company.
Yep, would be the preferred option, but a lot of people don’t have the funds to go fully ‘nice’.
As I said, I lucked out with my solarstorm as it has been excellent for 3+ years and my house is still standing. I fully accept that the Chinese stuff is more pot luck. However, put the charger safety issue to one side if you can. I reckon you could have 3-4 Chinese lights for the same money as a pukka brand and you would be 95% certain to get a good ‘un. This is completely unscientific and merely my perception.
For me, the issue is around safety of charger and battery, and on this point I agree with you.
Anyway, the key is to throw yourself into night riding. Work out what works for you and get on with it. It’s also a good pastime for really insincere people as one of the golden rules is not to look anyone in the eye if you’re using a helmet light 😉