https://www.medievalists.net/2024/12/sketchbook-villard-honn...
Medieval art is very stylised, but the quality of the lines, the details in the clothes, the crispness of the composition, all that requires a lot of skill. Check out Jean Bondol’s work for instance https://artsandculture.google.com/asset/tapisserie-de-l-apoc...
You may not like the style, but being able to produce works like that requires you to be good at art on some level.