Again, no. There is no "established cabal", and the rules are usually pretty clear. Sometimes there is some disagreement, but virtually always you can get consensus. If there's a problem with POV pushing, you can get outside help on the various project boards, ask for arbitration, admin intervention, etc. etc. There are lots of options if you take the time and effort to understand how wikipedia works.
In over 10 years of editing, I've never come across an issue that couldn't be solved by one of the above methods. If you think there is some article that is having a problem, please post it.
This is like saying that because there is the possible to sue over discrimination, discrimination doesn't happen.
Their are cabals that require extreme investments to fight. Most people aren't willing to put in that investment. Much the same that many people who face discrimination don't take it to court because they don't have the resources to throw at it and the expected return is too small.
Just because a system exists to resolve issues doesn't mean that everyone has equal access to the issue resolution.
I didn't say POV pushing and bias doesn't happen. I said that there are tools to deal with it. It does take time to learn how to navigate wikipedia, but it's not beyond the reach of the average person to do so if they have the time and motivation. I would urge more people to spend time editing wikipedia to deal with issues like this.
The average person doesn't have the time and motivation to learn, which is why Wikipedia is bleeding editors at a very fast rate, which just serves to make the problem worse and self-reinforcing.
This means that while anyone can edit an article, almost everyone gets their edits reverted.