Every player who comes into the NFL is, at least one some level, fulfilling a dream. Not every single person who is good enough to play at this level is somebody who legitimately loves the game, and that’s fine. It’s a business for everybody, but for some, that’s almost entirely what it is.
But just imagine being drafted by your favorite team. Players have to try not to have biases, or at least it’s probably recommended, not that it should affect their draft stock a lot. The Baltimore Ravens didn’t have a problem drafting self-acknowledged Pittsburgh Steelers fans Chris Wormley (now a Steeler) and Ben Powers.