That really downplays all the work both USA and USSR did to scale the V2 designs into something that can get payloads into orbit (and the opposing lands).

There are a few good books on what Korolevs teams did which are pretty fascinating in hindsight, especially due to limited access to computers in USSR. (Obviously sources about the US space programs are about 100x more numerous in the western world :) )

Semyorka (the first rocket that delivered a payload to orbit) has very little in common with V2. Fuel, staging, control, launch facilities - pretty much everything is different.

The soviets did start by copying the V2, but immediately after that switched to original designs.