The article was more for the reference of self-proclaimed "experts" who seem heavy on the theory end, and rather light on the real-world application end (despite claims to the contrary).
I think you may have missed the point of evaluation; being pegged by Homer or his cousin Jethro, the pit boss, is more a failure of demenanor than playing skill. The evaluation I was referring to is a spin on an analysis done a few years back, in which the play of a number of fairly serious players (all of whom considered themselves the sharpest tack in the box) was objectively studied.
The purpose was not exclusionary; we had one person who consistently outperformed the other team members, and we wanted to know why (obviously, so we could bring everyone on the team up to that level). It was a real eye-opener.
The article makes the point that self-image and ego can go to monumental lengths to hide incompetence and lack of skill, and that the individual who is deficient in a specific area is the one person least able to recognize that deficiency.
For example, you imply that if one manages to extract obscene amounts of money from casinos on a regular basis, if they are not hassled, they are either "not playing aggressively enough, or playing very badly." You keep the attention and the glory--I'll settle for the obscene amounts of money.
Good Luck