I get why George added the montage, of course. He wanted to give the ending a greater sense of finality, while also tying it into the upcoming prequels, as a way of making the saga feel more complete when watched in chronological order. RotJ was retroactively changed from the finale of a three-part story to the finale of a six-part story, so he wanted to give its ending more weight and a sense of total closure. Arguably, the new ending works better if someone is watching in Chronological or Machete Order, but I don’t watch in those orders, and to me, it still just feels forced.