The article you linked claims that Hutu and Tsuti are little more than social constructs. There's a certain class of Marxist-influenced academics who like to blame everything on social constructs and ruling classes.
However, the Wikipedia page http://en.wikipedia.org/wiki/Origins_of_Tutsi_and_Hutu , though it discusses the Western influence on conceptions of race in Rwanda, presents arguments that Hutus and Tutsis are of different genotypes.
In short, it takes more than the hearsay of this French guy I haven't heard of to convince me that an ongoing French "conspiracy" (which the article you linked made no mention of, by the way) is responsible for turmoil in several parts of Africa. As if there wouldn't be any violence in those places if those meddling French would just stop conspiring. Please post something to support you view, if you have anything.