I’ve devoted a lot of time in the past fighting against these scammers, even to the point of being threatened with lawsuits (empty threats by the way). This scam started in the 70s and eventually died, but was rekindled by the internet and easy ways to move money that got around mail and wire fraud laws. Then in the mid 2000s the money transfer laws tightened up, so these things slowed down a bit here in the US. I wonder if all the “deregulation” talk going on now has once again enabled them or st least emboldened them.
I haven’t watched the YouTube vids, but I’m willing to be they have some wonderful “testimonials” in the comments, yet the comments are disabled. That’s the typical MO for these scammers now, they have no taste for anyone challenging them with physics, math, electrical engineering or anything else that might be considered “truthier”. #fakenews.