Combine it with the hipster love of supercilious snark and what's old is new again. The driving force behind it is ignorance, or at least one of the driving forces. The other one is the same force that makes us love conspiracies to the point where our brains blow a fuse.
There are far too many new examples almost every day to be able to comment on them all but one that's been annoying me for some time is the one about Edison "stealing" the light bulb by infringing on someone's patent -- someone by the name of Henry (formerly Heinrich) Goebel, formerly a gardener and chocolate salesman. Goebel made that claim some years after Edison patented the carbon filament, high resistance light bulb. There had been attempts to make a practical device from the known phenomenon of electric current heating things up to the point of glowing, but those mostly used a low resistance, carbon rod instead of a filament, making them unusable and enormously inefficient.Many suits were filed as often happens after a breakthrough invention. All eventually failed when none of them could be shown to work.
What Goebel really did accomplish is to invent some improvements, as he claimed, to the manufacturing process. When Edison didn't want to buy them, Goebel then began to claim that he had produced a carbon filament bulb way back in the 1850's but was never able to come up with any examples or other evidence. Although some patent attorneys, seeing a windfall, visited Goebel, he was unable to present evidence for his claims. All lawsuits were eventually settled in Edison's favor by the 1890's and no evidence was every produced showing any prior work in electricity at all much less in light bulbs prior to Edison's patent.