Baseball is a business, and players can and should aim to maximize their contracts whenever they can. So, it does not really make sense to criticize players who do not live up to the value of their contract, as the team who signed them is more at fault for making the decision. Nowhere is this more obvious than in the case of Victor Martinez.
Every single person who follows baseball knew instantly that Martinez could never produce at a level equal to the four-year, $68 million contract he signed following the 2014 season. Ownership wanted to reward the slugger and hopefully squeeze out a productive year or two with some veteran leadership before it all came to an end.