I’m not sure I’d call it that. A inferiority complex is when your team is actually good but nobody gives them credit. They’re consistently one of the most overrated teams every year, along with Dallas. At some point they need to be treated by the national media as what they are: a franchise that hasn’t won a playoff game in a QUARTER CENTURY.
On a related note, I’m 56 and grew up in WNY, and I know quite a few people around my age who became Dolphins fans as kids because they were good, despite having a team in their own backyard. I find their continued suffering to be especially delicious.