Should Met and/or Yankee fans be outraged about Daniel Murphy?

Daniel Murphy:
Born: April 1, 1985 in Jacksonville, FL (Age 31)
Drafted by the New York Mets in the 13th round of the 2006 amateur draft.
Signed June 9, 2006.

In other words a lifetime Met until:

• November 2, 2015: Granted Free Agency.
• January 6, 2016: Signed as a Free Agent with the Washington Nationals.

The Mets had every opportunity to sign Murphy before, during and after the 2015 season. And even after Murphy had reached free agent status. Murphy didn't sign with the Nationals for two more months.

2015	30	New York Mets	$8,000,000	5.109	contracts
2016	31	Washington Nationals	$8,000,000	6.109
2017	32	Washington Nationals	$12,000,000
2018	33	Washington Nationals	$17,500,000
		Earliest Free Agent: 2019

In 362 plate appearances (336 at bats) with Washington in 2016 Murphy leads the National Conference in hits, batting average and total bases. OPS .985, OPS+ 155.

OPS against the Mets 1.331; 7 home runs, 21 RBI.

Instead the Mets replaced Murphy with Neil Walker (OPS+ 101) who is five months younger.

• December 9, 2015: Traded by the Pittsburgh Pirates to the New York Mets for Jon Niese.

The Mets are paying Walker $10.5 million in 2016 after which Walker becomes a free agent.

What The Hell’s Gotten Into Daniel Murphy? By Neil Paine JUL 15, 2016 AT 12:55 PM

.. the Mets moved on from Murphy to Neil Walker at second base — which, according to the stats, was basically the right call ...

(Murphy) currently ranks third in the National League in Weighted Runs Created Plus (wRC+)1 and fourth in wins above replacement. (Murphy has also hit Mets pitching especially hard this year, delivering what already ranks as the most RBIs by a player against a team he played for the previous season since 1960.) ...

If Murphy maintains his current wRC+ for the entire season, it will be the 21st-biggest single-season improvement by a hitter over his previous career wRC+ at age 31 or older since 1901
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In fact the Yankees could have signed Murphy instead of trading for Starlin Castro, who converted late in 2015 from shortstop to second base and turned 26 in March; OPS+ 82 in 2016.

2016	26	New York Yankees	$7,857,143	5.150
2017	27	New York Yankees	$9,857,143
2018	28	New York Yankees	$10,857,143
2019	29	New York Yankees	$11,857,143
2020	30	New York Yankees	*$16,000,000		$16M Team Option, $1M Buyout
		Earliest Free Agent: 2020

Or the Yankees could have gone with 25 year old Rob Refsnyder; career: 146 PA, OPS+ 104. Paid major league minimum. Of course, there's also this:

Cashman traded Solarte for Headley, ignoring Donaldson. .Friday, May 6, 2016

Yulieski Gurriel: Yankee GM Brian Cashman hardly ever misses an opportunity to miss an opportunity. Friday, July 15, 2016