Socialism can not calculate prices effectively. This is socialism’s (of various kinds) fatal flaw.
Real prices, honest prices, often reflect a reality that the powers that be in socialist systems don’t like. As such the powers that be start looking for reasons, any reasons other than the real ones, for why their particular economy is failing. They often conjure boogeymen.
You see it’s reactionary capitalists undermining the system. They are trying to extract the people’s surplus value.