I won't tell you how long it took me to figure out that, for example, Surry, Surry, Virginia was not a bizarre duplication error but intentional. And it still jars me when I see entries without "County" or "Parish" when applicable & known, regardless of whether or not a city is named. WikiTree is not only international but also has all levels of genealogists - from total novices to family historians to professionals - and I think the benefits of routinely including the full name of a location if you know it outweigh any perceived negatives (I don't see any, but I assume there's a reason why the professionals do it the way they do). And even professionals would be hard pressed to say whether an entry of "Bristol, Virginia" on an unsourced/unconnected profile with no additional information or text is referring to Bristol Parish (which served counties near Richmond, Virginia [Charles City, Henrico, Prince George, and Dinwiddie Counties]) or to the Independent City of Bristol near the western tip of Virginia bordering Tennessee. For these and other reasons, the Virginia Project's guideline is to always include parish and county if known (e.g., St. Paul's Parish, Stafford County, Virginia).
Cheers, Liz