You aren't talking about the same types of thing:
1. The US also has loads of value which is not mediated by the state. A shop can decide what to sell, and you can decide to buy it, without any central planning or money spent by the state. All of this value could be (and was) decided by the state in the USSR.
2. "social welfare budgets" are not in the same league as what happened with central planning. From Wikipedia:
> In 1928, Stalin introduced the first five-year plan for building a socialist economy. In place of the internationalism expressed by Lenin throughout the Revolution, it aimed to build Socialism in One Country. In industry, the state assumed control over all existing enterprises and undertook an intensive program of industrialization. In agriculture, rather than adhering to the "lead by example" policy advocated by Lenin,[31] forced collectivization of farms was implemented all over the country.
> Famines ensued as a result, causing deaths estimated at three to seven million; surviving kulaks were persecuted, and many were sent to Gulags to do forced labor.
We know that it rarely makes sense for other people to even plan software timelines for teams of 4 developers, and the team members are the best people to estimate timelines, pick tools, and solve problems. How much more does that scale up for a whole country's economy? How much more damage can someone do if they are choosing centrally to deprioritise wealth creation over the latest thing the state wishes to accomplish?