Buried in the original article is a mention that these statements were made during a two-day event Netflix held together with Dolby Laboratories, centered around High Dynamic Range video (e.g., Dolby Vision).
Maybe these out-of-context statements really mean "If we're filming a show in Dolby Vision and it has a lot of really dark scenes, maybe we should make a mobile version that brightens up the shadows a bit so that it's not a murky mess on a glossy mobile-phone screen under who-knows-what lighting conditions?" The Dolby Vision spec can adjust the dynamic range to meet the capabilities of the viewing device... if the device has a Dolby-manufactured ASIC. It sounds like Netflix is considering how to offer mobile users the option of a server-side tweak to do something similar.
That would actually be a good thing, especially if the user had the option to select "normal" or "mobile optimized" versions.
I have a Dolby Vision-equipped TV. Netflix has several shows filmed in Dolby Vision. Many, like Daredevil, have very dark cinematography. It looks incredible on a Dolby Vision TV under controlled lighting... but you're definitely missing stuff on an iPhone under commercial lighting. Bumping the darks up a notch or two to compensate would not be a terrible thing.