He has said all along that the bats should heat up when the weather warms up, but shouldn't the opposition's bats warm up as well? Waiting for the summer to have a good offense is a bad way to do it.
I don't think Contreras is hitting too far above his weight class. He may dip a little, but I don't see him really tanking. He's still adjusting to being a fulltime 1b, so we don't really know how his offense is impacted for better or worse.