Its not a case of 'could have', they are already here.
I purchased a couple of these possible chargers last year, for charging some sat-nav units. Both looked fine and did the job, until one unit fell apart as I was unplugging it from the mains supply. Had a child or even an adult not turned off the electric supply, then a possible serious injury or death could have occurred.
I contacted the seller, who was selling these units via the internet and mail-order. The seller hadn't a clue about the laws covering these or any type of electrical goods, so I reported the matter to our local trading. Our local trading standards contacted the trading standards who covered the area of the country, the seller was located.Apparently, an 'advisory' visit was made to the sellers premises.
Would point out that these goods looked genuine, because they had the necessary kitemarks on display!.