Wikipedia has its legitimacy problems like any other political entity. It's legitimate as an informational resource mostly for lack of real alternatives. It fills a need that no other resource does.

And political evolution is not political revolution. Sure, the 100th generation after ours won't care how a bill becomes a law, but that doesn't mean the underlying political truths are going to become obsolete.

Revolutions don't really change anything, they just shuffle things around on the surface. Things might evolve after the revolution, but it's by no means sure.