That free markets ensure a Pareto optimal allocation of resources is the first fundamental theorem of welfare economics. It does not imply any normative statement on whether the distribution is "just", as that is very difficult to qualify.

There's quite a bit of difference between pareto optimal and "most effective". In many situations, pareto optimality is actually among the worst of all possible outcomes (see the prisoner's dilemma, also local maxima). If you had used the former term in your comment it would have been more clear. As it is, it reads like a deliberate attempt to invoke poe's law.

EDIT: Oh wait, you're not the same person.

Its not sarcasm.

I come from a formerly socialist economy(India). Central planning is a scheme to create bullshit jobs which don't have to exist at the first place. This distract funds and human resources from other competing higher priority work.

Every thing is state planned starting from detergent to air planes. All services are mediocre and everything is in a state of stagnation and slow decay.

I'm not

He's most likely not. There are honestly people that believe this, rather than a more nuanced view.