You don't have to overcomplicate things. According to
@FrogReaver (and apparently, RAW after the errata) all that the Darkness spell really do is creating a transparent bubble of darkness with the special properties of not having any interaction with Darkvision or any form of light that's not created by a spell of lvl 2 or higher.
It's no different of normal Darkness in any other sense and most definitely doesn't make Darkvision worse than normal vision.
You guys are probably missing a bit of context in this discussion.