> Belgian schools do not in any way teach that Belgium is solely responsible for the Rwandan genocide

Making the cackhanded pre-1970s Belgian administration "solely" responsible for the 1993 genocide is an exceptionally unorthodox (i.e. stupid) hot take, so it's no wonder that no school is teaching it.

That's comparable to claiming the the US, British and French are "solely" responsible for the Holocaust because they forced Germany to sign the Versailles treaty. Yes it might have played a role, but it's clearly ridiculous.