I wouldn’t put it like that. No one was ever gonna suggest playing Antonio Valencia on the left because of his one dimensional approach to football. Or Peter Crouch as a winger. Premier leagues best strikers Henry, Rooney, Anelka , Kun, RVP played wide at some point. We also have those who never did like Drogba, Dzeko, Torres, RVN etc. based on attributes, certain players can play other positions better.
In our squad, Martial ST and LW, Amrabat LB and CM so far, Cassemiro CDM and CB, Shaw CB and LB, Dalot LB and RB, Eriksen CM and AM. Others have not been tried but you can see why they can succeed like Martinez CDM, Dalot CB and all our wingers on the opposite site . Some players are too specialised like Varane, AWB, Hojlund etc.