"

 Start with the fact that Wikipedia is not a dictionary.  Continue with the fact that Wikipedia is not in and of itself a reliable source.  What a redirect on Wikipedia points to has absolutely nothing to do with anything.  Ask, say, m-w.com  y'know, an actual dictionary  the same thing and you'll see what the difference is; see definition 2, for which there is no equivalent for the the word inculcate. Indoctrinate has negative bias connotations; inculcate does not.  "