[sigmar]

The "bulky ferrite" he used is an easy 'hack.' the correct way to fix this wouldn't be as expensive or as bulky, as noted in the article: "I expect Apple could solve this problem with much cheaper and hidden it somewhere cleverly."

[JKCalhoun]

I'm not so sure. I can't think os a solution other than a choke off the top of my head.

[ComputerGuru]

You see these in circuits incorporating SMPS all the time: https://www.digikey.com/en/product-highlight/f/fair-rite-pro...

Smaller, cheaper, lighter, better. Just hard to retrofit if they weren’t designed as part of the board to begin with.