Tragedy to see that electronics being burnt to death. Always use an RCD on your mains power line, and switch off power when you are not around. If you are a ham, it is highly unlikely Japanese stuff will have caught fire. Except for nuclear power plants, the Japanese are ahead of the game when it comes to safety.
There is a lot of dodgy stuff on eBay from China that finds its way into the West that has no safety compliance whatsoever. Many of the manufacturers have never heard of UL 94 V-0, or IEC-60950, or IEC-62368. Nor do they care, as long as they get rich and glorious. Unfortunately, the more of this non-compliant stuff around, the higher the risk of fire or electrocution in the average home.
I have a friend who got $20K worth of fire damage due to a non-approved ceiling fan in the bathroom where the plastics caught fire. Last year, I inadvertently bought a fake Samsung phone, loaded with malware, with a fake Apple charger in the sealed box that had a potentially lethal design, especially for kids with small fingers. I got a full refund, and then I reported the seller to eBay, the ACMA and the NSW Office of Fair Trading with the aim of putting the crooks out of business.