On purpose

[Koen G]

I am sure you are completely wrong there

Why?

If the VM was made ca. 1420, its makers were born in the late 14th century. But even if you want them born in the early 15th century, the difference is still significant. Copernicus was born 1473 and became a full-blown Renaissance astronomer that gave the Copernican revolution its name. He finished his studies in the early 1500s. 

I agree that we don't have to rely on stereotypes, but I see no point in denying that the Middle Ages were different from the Renaissance, that is what they get different names.