I think the article was right in a lot of ways. Kevin Love was a beast with Minnesota. He averaged 26.1 pts, 12.5 reb, 4.4 ast on pretty efficient shooting. He would have fit into the Warriors system and culture perfectly. He is a great passer and rebounder and would have kept the ball moving while also being a threat from 3. A lineup of Curry, Iggy, Barnes, Love and Draymond still wins the title in 2015. I'm not convinced they wouldn't have been better with Love.
Also, if Love was in GS, Cleveland obviously couldn't have traded for him. In 2014, there weren't that many all-stars available for trade. Other potential options would have been LaMarcus Aldridge or Dwight Howard. Maybe Carmelo Anthony. None of them would have fit all that well with LeBron - and none could stretch the floor like Kevin Love. I don't think in any of those scenarios Cleveland beats Golden State in 2016.
Meanwhile, Klay would be in Minnesota doing his best Bradley Beal impersonation.