According to the article, you will want to get a set of Lightning headphones for your iPhone 7 for several reasons. Some of these include "Hi-Fi Portability", "Louder", "Better Sound" and "Better EQ". Basically the Sine headphones they are talking about are better than Beats - but so are Koss headphones from Walmart. The reality is that most of their "issues" with analog headphones is already solved with software - but Apple wants to lock you into something that is technically better on paper, but in the end - sound is analog. A good set of high-end analog headphones don't have any of the problems stated in the article - and the Sine headphones are not cheap either.
I have been listening to Audeze's Titanium EL-8 and Sine headphones for the past few months, both in the conventional way and through the iPhone's Lightning port. These audiophile cans sound dramatically better when exploiting the all-digital connection with their so-called Cipher Lightning cable, which houses its own digital signal processor, digital-to-analog converter (DAC), and headphone amplifier.