Photo by Benjamin R. Freed Written by DCist contributor Matt Siblo After the projector screen went down at the Rock and Roll hotel on Sunday, an inconspicuous video blogger rattled off a loose-tongued diatribe about a band he saw open for MGMT with a “really, really stupid name” who he pointedly described as “unbearable.” He recalled the lyricist singing songs about the alphabet and counting through “some robot voice” sounding as if “they are…