Either way, DS9 was waaay ahead of its time, in terms of both content and format. To whatever extent DS9's popularity might be growing, it's due to the fact that viewers are beginning to understand DS9's place in the evolution of serialized TV.
On a personal note, I was so turned off by DS9's first few episodes that, at the time, I completely dismissed it as a series (I was still in college when it debuted). Only years later (oh, say, fifteen years later), did I give the show a chance. That's when I realized just how good it was.