Where did I mention politics, I said everything has to stand on merits alone.

An idea in itself has to stand on merits which is what the post is taking about. By introducing politics you necessarily involve a group identity, a label to the conversation in order to identify yourself. If you just examine based on merits alone, you'd see democracy is flawed, communism only works in an insect hive, monarchy works only with restraints and dictatorships can be extremely feasible but are more likely to crumble when the leader dies unless there is a clear line of progression which evolves it into a pseudo monarchy.