It does tend to be a West Yorkshire thing, as Town when they were in the PL were marketing themselves as the "Yorkshire" club.
Doesn't really bother me tbh.
Sheffield people in general seem to have a glass half empty attitude and feel that compared to a city like Leeds it doesn't promote itself.
An example would be football itself, the modern rules, oldest club (Sheffield FC), oldest stadium (Hallam FC) oldest professional stadium (Bramall Lane), first game using floodlights (Bramall Lane) etc are from Sheffield but the City never seems to promote itself. If this was Leeds, Manchester, London it would be highlighted more.