The Talk section of the Wikipedia article includes the following relevant paragraph:

Yohani Lauwo often is mentioned as first ascendant elsewhere. Because of that, he is regularly added to the lede and the infobox as such. It is therefore important to mention him and keep this explanation in the text. This is a sensitive issue, involving understandable resentment of the colonialist superiority complex and equally understandable believe that someone local would have climbed Kilimanjaro before those colonialists did. The latter is aggravated by the fact that due to glacier melt the ascent is now just a long hike up.