Why is Greek tragedy not concerned with evil men?

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A.D. Nuttall in Overheard by God: Fiction and Prayer in Herbert, Milton, Dante and St John (1980) answers:

Greek tragedy owes its special force to the stratified coexistence of two ethical worlds. The older stratum is one in which men delighted in the unimpeded energy and even the bragging of the archaic heroes: in the later stratum men view such behaviour not precisely as sinful but as peculiarly likely to attract the jealous anger of the gods. Thus Greek tragedy is not typically concerned with evil men who get what they deserve but is rather about heroes (Ajax, Heracles, Eteocles and Polynices) whose very superfluity of energy offends the infinitely more powerful gods. (pp. 106-107)

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"What does SCHOLARLY say, which is not said by INTELLIGENT and RIGHT?"

A.D. Nuttall (2003) answers:

The word, I think, connotes a quality of completeness: at the lowest level, complete literacy (never a colon where a comma should be); complete, though not redundant documentation; complete accuracy even with reference to matters not crucial to the main argument, and, together with all this, a sense that the writer's knowledge of material at the fringe of the thesis is so sound as his or her knowledge of the core material. This seems to me to be the essence of the matter---that although there may be a strong central thesis which rightly absorbs most of the energies available, the writer nevertheless maintains a broad front of total accuracy, a sort of democracy of fact, in which no atom of truth shall be slighted, however humble in relation to the main theme. (emphasis original, p. 191)

Hear, hear.