Can't this be explained by the special charecters and the extra step to translate them, such as Diccionario Español changes to xn--diccionarioespaol-txb in a do

Can't this be explained by the special charecters and the extra step to translate them, such as Diccionario Español changes to xn--diccionarioespaol-txb in a domain. So the extra step adds a level of complexity/compute?