He’s not a backup catcher. Look at it as signing Adley to play 1B. Adley is catcher 1A. Contreras is catcher 1B. They all rotate at C/1B/DH.
We need a RH bat.
So instead of giving JD Martinez or Mancini, 10+ million, let’s just give the Contreras the 4/68 and buy Adley’s needed days off.
I call BS on this. Some hitters have the skill of shortening their swing and going for a hit that drives in a run. I think Westburg has that. After watching a season of some O's hitters swinging from their heels to hit fly ball outs to the outfield it would be refreshing to add a player that actually knows how to work a count, hit a line drive and drive in a run.
I agree with your 2nd point though none of the four guys you mention were at the same club as Westburg all season long. And getting 106 RBI is an all season long effort.