Fact is that before mass media, printed pictures (i.e. Except for the gays.Īnd note that these terms started coming into gay culture in the 40s-60s, so they're moderately recent phenomena. Not technical or specialized language needed because nobody cares that much. Details can be filled with regular language. The vocabulary around men's bodies is generally pretty broad otherwise: fat, fit, thin, handsome or not. Looks are also on the table, but usually as a threshold/cutoff, so instead of a rich vocabulary of body types they just have "handsome/not handsome" according to whether they're above or below a cutoff. Moreover although women do care about bodies and appearances, they're more likely to be interested in a man for his personality, prospects, sense of humour, and ability to treat women with a modicum of goddamned dignity.
Women are just as picky about wheather a man has a narrow waist or boomin' thighs or a developed chest or what-have-you, but their ability to speak sexually about men was fairly repressed until like the 1980s/90s (and even then only in The West).
Men's bodies and male sexuality are generally underappreciated, and historically society cared far more about men's usefulness for their labour or self sacrifice or industry. It's impossible to talk about something like this without generalizing over a population, so please bear with a few generalizations gay men coined these terms because gay men care the most about men's bodies.