Arraez was a fan favorite for a reason. I think the vast majority of fans were sad to see him go, I was.
But if we still had him, where are Polanco and Julien and Kirilloff and Lewis getting their at bats, especially with Buxton eating up the Lions share of DH B4 he went on the DL.
I think the anger on the trade was overstated by to create a storyline. I believe that a lot of people would have wished to have kept Arraez, but it made more sense to trade him so they could shore up a position of weakness from one they had an abundance from.
I think this is one of the rare trades that benefitted both teams and the players involved.