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Copenhagen as usually understood does not take the quantum state to be the actual real state of the system, yes.I thought Copenhagen was an example of a non-realist interpretation

However, Copenhagen as usually understood also does not take any position on whether the indeterminacy in the math of QM regarding measurement results (i.e., that the math only predicts probabilities) reflects a "true" indeterminacy in reality. So I don't think Copenhagen as usually understood qualifies as "truly indeterminate/stochastic".

AFAIK QFT admits the same interpretations as QM in general, which would include both realist and non-realist ones.I thought QFT could be interpreted as non-realist