It's not a productive word really because it almost poisons every discussion based on whether someone's broadly sympathetic to 'capitalism' or not. Even when people actually agree this can cause meaningless confusion. What I think is very valuable within our system is markets as a tool . There's no functioning replacement yet for allocating resources through something like a market at large scale. Even socialism symp…
I don't think anyone denies that omniscient, well intentioned planners would be very efficient, but subjectivism and the calculation problem mean that you will never have the former, and political economy explains why you will not acheve the latter. Spontaneously ordered systems are also better at dynamic adaptation to exogenous changes (such as technological ones).
Every planned economy that has existed has used price signals by the end user in order to fix these issues. Planned economies are made to run an economy without markets, not without prices.
As long as you have an end-user price signal, subjectivism is not an issue and the calculation problem becomes a computational issue that can be solved.