I agree they will be out, but you don't get to this point by giving up that easily. I think we get fooled by the emotional outward signs. Sports psychologist generally try to move players away from the emotional outbursts of throwing helmets, punching walls, etc that we were conditioned to believe were signs of players trying. Instead we should see steady, focused, one pitch at a time, non emotional, playing. They may not be very skilled players, and many will be out of the league soon, but my guess is it will be their ability not lack of trying, ending their career.
That lack of ability, physically and mentally, will sometimes be seen as a lack of trying when they hesitate, slow down, etc.
I am seeing inept, old, less skilled players out there, but so far I'm seeing trying. But it's the Sox, they could decide they want to quiet quit and end their careers.