This line of stories where any kind of physical access to a device can be abused in an unexpected and incredibly convoluted way is completely out of control. Hey guys! If you discharge a big capacitor into sensitive electronics IT BREAKS! WOW! HEADLINE!
So let's say manufacturers, shaken awake by this completely unexpected use of their devices, now protect their electronics from this attack. Next year: "Hey guys! If you stick a 240V line directly into your USB port IT BREAKS! WOW! HEADLINE!"
So they fix that too, although I couldn't imagine why they'd want to. The year after: "Hey guys! If you fly a metal object on a metal wire during a thunderstorm and link the metal wire directly into your USB port IT BREAKS! WOW! HEADLINE!"
Like I said, it is getting ridiculous. Just like all those completely pointless side-channel attacks. Why, yes, if you stand next to a 3D printer, you _can_ in fact listen to it and presumably get some vague idea of what's being printed. Or you can just, you know, look at the damn device you are standing right next to. So this attack is great news for all spies who have physical access to sensitive 3D printers that are covered by blankets - and of not much use, or concern, to everyone else.
Stop it already with the silly fear mongering. Side channel attacks that require access that would allow a far more direct attack to take place are completely pointless, and need not be reported on (or maybe we can have a summary topic every year, a "best of the stupidest" kind of thing). And discharging big capacitors tends to destroy electronics. It's not "news for nerds" and it is not "stuff that matters". But maybe this site is now "slashdot: clickbait for nerds and stuff that sounds good but has no substance whatsoever"...