No evidence given. There is no conspiracy against Russians in Sweden and Finland, the same law applies to everyone. In order to get a residence permit in Sweden and Finland to move to live with a family member, the same rules apply to every citizen of a non-EU country: In Sweden, the following are counted as family members: wife, husband, cohabiting partner, registered partner and unmarried children under the age of 21. Unmarried children who are 21 years or older can be given a permit in certain cases. The requirement is that they are being supported financially by you or your partner. In Finland, The family members of Finnish citizens and of non-EU (third country) citizens and comparable persons are: spouse, registered partner, cohabiting partner, guardian of a child under 18 years of age, and child.
The sphere of family members is laid down by law and does not necessarily correspond to general views on what constitutes a family member. The Swedish and Finnish concept of family is narrower than that of many other countries.