I saw that video! It's pretty scary what's being sold on the web from major suppliers such as Amazon. Linus' LTT Media has some great and honest reviews and some great shows. I've subscribed to his Floatplane media channel to get the exclusive information not available on YouTube.
For straight up electronics, look up Bigclive on YouTube. He disassembles, or as he says "takes them to bits, cheap gadgets and not so cheap tools and electronics, found on Ebay and at his local Pound Land. Some of those things are outright dangerous such as a recent air ionizer that's connected directly to the mains! The bristles weren't even isolated. and he was able to short them out.