[2022] Why are five Finnish premium aircraft in the Swedish tech tree?

Finish vehicles will be in the Swedish tree much like how Italy hosts the minor axis nations currently. Germany is not really in any need of Finish vehicles and has plenty of choices without them. So its better and more relevant to Finland to be with Sweden.

Currently the Hawk and KV-1 in the German tree are rare gift / event rewards. So at least in our immediate plans, we don't plan to move these exact variants like what was done with the Strv 81.