Again - what does it mean not to accept it?
Your question answers itself. It means I don't accept it, unlike you, apparently. It means I don't pretend we need to meet some imaginary salary cap when considering free agents, draft picks, player extensions, or whatever. It means that if the team sucks due to constant underspending, I save my gas, food, and ticket money and put them toward a more worthy cause. It means that I don't stop letting anyone who will listen know that I am displeased with the team's fiscal policies no matter how some people may be tired of hearing about it.
Not running a message board called Washington Nationals Fan Forum?
I'm not sure exactly what you're attempting to insinuate here, but the only way this board is going down is if people stop coming here. Seems to me that's up to the team.