stereotypes are built on generalities, which are typically built on some kind of statistical truth.
we wouldn't have the distinctions I-E, N-S, F-T, J-P if there weren't any differences. and expanding those generalities to guide us generally is not harmful - for instance, me looking to what careers ENFPs in general tend to report the most satisfaction in. what is harmful is boxing anyone in (or out) based on generalities; saying you can't be an engineer because you are an ENFP.
i think we just have to acknowledge that they are all value-neutral, and the key to it all is developing all of the functions as best we can, to be balanced and versatile. and that it's just one way of understanding things. it can never account for all the complexities of human personality or experience, and thus should not be used to generate absolutes.