This is a perfect example. People respond to even basic expansion of viewpoints with incredulity.
First, I mentioned women. Gender analysis in mainstream history academia has developed a lot over the last 30 years. "There weren't any women" doesn't pass even a casual glance like "there weren't any poc" does for a renaissance course.
Second, although white voices are obviously the dominant voices of the renaissance, it is important to understand that cross-national communication networks existed during the early-modern era. The story of the introduction of coffee to europe is a classic one where analysis has traditionally focused on the europeans involved but this failed to consider that both sides of the trade were essential to the story. Since it is the renaissance, obviously art and architecture play a huge role. But art and architecture travel between nations and you can't tell the full story of european renaissance art without considering the turks (and others).