Money doesn't make politicians, people do. Money is just what gives them more power.
Why would Bitcoin be a means to achieve a political end?
Bitcoin, or it's successors, makes paying the State an entirely voluntary affair. They can't even prove how much you've got. When people cannot be forced into paying the State, the State must convince them to pay. That puts them in market competition, if not with each other, then at least with all the myriad other things money can buy.
Yes, but it doesn't remove the government, it just makes them more honest (unless they basically kill everyone who carries bitcoins like they currently do with any lethal weapons).
Government may be a flawed principle in itself, but I think short of some advancements in Eugenics, our need for government is far from over. This forum is a government. The internet you use is a government. McDonalds is a government (they control your actions and do not reward you unless you do what they want, they way they want it, and yet they produce a product through this). Everything needs management, and the roots of this go right down to our childhood. When a baby can be born alone and grow up without any help from anyone else, we won't need government. The second someone says "we dont' need moderation of that", I'll point you to pedophiles, kidnappers, murderers and psychopaths that would raise the child up as a freak.
Government
may be inherently evil, but our interest in creating one is natural and understandable. Government is a file system tree on your computer. You want chaos? Fine. Randomize your hard drive. No order! No one tells these bits what to do or where to go! Rather useless.