I wasn't too impressed with his work.
Let me rephrase his reasons for not going into medicine:
1) NOT ENOUGH TIME!!!111
2) NOT ENOUGH TIME!!!111
3) It's hard.
4) People don't pay me enough.
5) Insurance is expensive.
6) It's physically hard.
7) I couldn't do my job as well as I expected.
8) I hated everyone.
9) People don't respect me enough.
10) I feel useless.
I think the only good point he raised is #7, which is probably true in most cases. But I imagine most of his complaints are because of a poor disposition. Even better, the reason that he gives as the sole justification for becoming a physician makes me believe he had serious misconceptions and misunderstandings about the field. The fact that he's no longer practicing is a pretty telling sign, as well. That's like getting the opinion on Christianity from a person that became an atheist.
I don't trust his perspective at all, even if some of his points are valid. No one believes becoming a physician is an easy endeavor. That said, how any one individual experiences it will vary substantially from person to person, which will obviously color the experience.