I also have problems with Wikipedia's favoritism of insiders who have learned how to navigate its bureaucracy, but the fact that most edits of political and/or controversial topics are immediately reverted is not in itself evidence of a problem. A priori, I would expect that the majority of edits to political and controversial topics are bad and should be reverted.

I've had tax stuff reverted even. eventually was allowed I think. Wikipedia has problems.

I don't have an extensive wikipedia career, but I've found that even my few edits to political topics have been accepted.

What did get reverted was a trivial [citation needed] fix, for a musician's page, for a sentence stating they were involved in scoring a film. I found a relevant citation and this was promptly reverted, for reasons that were explained but, at least for me, utterly incomprehensible

You're not really considered a veteran editor until you've won at least 10 Request for Comments outquoting your detractors with at least 100 obscure Wikipedia guidelines and policies.