Talking about the role of V2 in the development of rocketry in various countries is more or less relevant to the discussion of Isar, because it was a major milestone, and it did influence all rocketry worldwide, in many different ways.

Rocketry may be much more talked about, but in terms of headcount is was a tiny thing compared to the number of German experts who were "invited" into all Allied countries after the war. Just France and UK had brought in about 3 thousand persons each. If one had said that this did not happen, that would have been an error. But simply not bringing this up at all because it is not very relevant to the discussion of Isar is fine, I think.

Debating who "won" the space race, and who "used" Germans "better" is not something that I want to do.