Ahh yes, bringing German scientists and technical staff to the USSR to learn from them and then repatriating them back to the GDR 5 years later is exactly the same as putting an SS Sturmbanfuhrer who was personally in command of a facility where slave labor was worked to death into leading roles in your space program into the 1970s.

Let's also just conveniently ignore the fact that the R-2 rocket was developed by Korolev's team in direct competition with the G-1 rocket developed by a German team working in the USSR. The USSR chose the R-2 over the G-1 specifically because it didn't want the Soviet space program being led by Germans and by 1950 had repatriated most of the German specialists.

After 1950 the Soviet program was largely indigenous, led by Korolev and other Soviet citizens. All of the major achievements of the Soviet program were led by Soviet citizens, scientists and workers.