I'd buy this if Apple didn't start doing USB-C on their computers 3-4 years ago, If USB-C isn't where you want to go as Apple, fine, but be consistent across the product lines.
You can't power a laptop from a Lightning cable. Lightning came out 7 years ago to replace the 30-pin connector.
It makes sense for the laptops to replace their proprietary power ports with USB-C but they'd need a time machine to be consistent across product lines and not screw somebody over.