The apparently effortless fluidity of both style and story may actually have mitigated against critical notice, in comparison to notorious stylists like William Gibson, or, again, Ursula Le Guin. But, despite Bujold's space opera plots, the flashes of humour rare either in Le Guin or in SF as a whole, and the steady pigeonholing of her work as military SF, her similarities to Le Guin go far beyond the presence of that wall.
Firstly, both are consummate character-builders. Indeed, characterization, emphasis on character, and plots that depend on character and the novums of technology are among Bujold's strongpoints. Nowhere does this emerge more clearly than if her work is taken as military SF and compared to that of writers like Jerry Pournelle or David Weber.
Lois McMaster Bujold