Just because someone has been here a long time, it doesn't necessarly make them a conservative. I've seen a whole lot of people with 7+ years get the boot. Grunt is well on his way. Look at the trolls actions the last couple days if you need an indicator.
Getting the boot doesn't mean you lose your Conservative Card. It just means that the particular owner of this board or his appointed reps don't like what you have to say. We've lost a lot of really talented and interesting folk from this board for saying unpopular things.
On the other side of that coin, being the loudest voice in the echo chamber doesn't make you a good conservative, either. Neither does being divisive, especially in a game where the most united side wins.