As far as that, I don't see how hiring foreign advisors somehow make your own economic achievements worthless - anyone can do that, and it's stupid to expect everyone to reinvent the wheel.
https://en.wikipedia.org/wiki/Scare_quotes
As far as that, I don't see how hiring foreign advisors somehow make your own economic achievements worthless
Because there were no "own economic achievements" in this case. The USSR claimed to pioneer a new and superior economic system to the capitalist West, but their greatest period of growth and improvement was accomplished through Western direction.
They imported technical experts from the West to help them design and build things until they figured out how to do it themselves. That is orthogonal to the economic system.
Or, for that matter, the Nazi economic "miracle". In their case, they started from the wreckage of WW1 and the Weimar Republic, but they used knowledge and corporate organization that predated both to rebuild, while letting their ideology and leadership take credit.