It wasn't something the editor of the article said. They were quotes that the VP of Huawei said.
"Huawei's Changzhu Lee, Vice President of smartphone product line, told me by e-mail. (Huawei's
Nexus 6P is one of the first Android phones to move to USB-C.) "The 3.5mm headphone jack
becomes redundant, unless users need to connect an external USB hard drive to the phone while listening to music via headphone.""
"Removing the jack and the associated board would create a little more room inside a phone," Lin said. "Not a ton, but it is significant." He added that we're still likely to see digital-to-analog converters on the phone and not left for headphone manufacturers to deal with.
Huawei's Lee agreed and hit on another key word in removing redundant modules — flexibility.
"Removing the headphone jack would definitely provide more flexibility in the spatial distribution and thickness of the phone," Lee said, "as it is the thickest peripheral part of the phone.""
"Getting rid of the 3.5mm headphone jack is possible, but still just one piece of the puzzle.
Huawei, one of China's top smartphone manufacturers and in the top 5 or so worldwide, thinks getting rid of the 3.5mm headphone jack certainly is a possibility, especially now that manufacturers are moving to the USB-C standard."