Quote Originally Posted by sonic_discord View Post
That was my guess as well. I wonder if they were threatened with legal action or if a cease & desist was issued or something.
From their wiki:

On June 6, 2017, the band announced an official name change back to the original "Death from Above".[18] Although the band has said their social media handles will keep the "1979" suffix, all future music and shows from the duo will reportedly arrive under the new name.[7][8] Grainger said in an interview that the band decided to not include the "1979" suffix on a tour promo for their tour with the Eagles of Death Metal in early 2016, "just to see what would happen" and the band received no legal issues because of it which led to them doing it again on their tour promo with Black Rebel Motorcycle Club and once again there were no legal repercussions.[19]