FWIW I wouldn’t necessarily say that Kegan stages are important—they seem like an interesting model in part because they feel like they map quite well to some of the ways in which my own thought has changed over time. But I still only consider them to be at the level of “this is an interesting and intuitively plausible model”; there hasn’t been enough research on them to convincingly show that they’d be valid in the general population as well.
FWIW I wouldn’t necessarily say that Kegan stages are important—they seem like an interesting model in part because they feel like they map quite well to some of the ways in which my own thought has changed over time. But I still only consider them to be at the level of “this is an interesting and intuitively plausible model”; there hasn’t been enough research on them to convincingly show that they’d be valid in the general population as well.