I did not say what your first paragraph says. I think there are people who do not have the desire to work hard, but who never the less choose to do so, even though they don't want to.

I will grant you that there are some people who, due to handicaps or other things beyond their control, do not have the option of choosing to work hard. But I claim (without statistical proof, I admit) that by far the majority of those who do not work hard, still have the real option of choosing to work hard, but do not.

For most of those who won't, "I can't" is also "very self-serving and transparently wrong."

What do you think is going on inside the brain of someone who says "I can't?"