people assume that those with last name “shah” are syeds but they dont own this name. Same is case with khan. But i have observed in punjab that any pashtun there is addressed as “khan sahab”, same is situation in india where any one with khan surname is automatically assumed as pathan. If the general conecpt in subcontinent is that khan and shah are pashtuns and syeds respectively then you dont need to get upset over such small things.