Why go through all of the trouble to make fantasy sound anachronistic? Because that’s the point.
To write fantasy in a way that makes it seem modern or current day is a huge wasted opportunity in a genre tailor-made for anachronistic fun. What good is it to create a time and place with swords, sorcery, and a healthy dose of medieval if you don’t use it? It’s why I went through the trouble to make the writing sound archaic in The Stonemaster series, and will do the same with the next one.