Any soul, which takes the Veda as authority for recognizing God is Vaidika
The reason for service to God must be the inspiration gained by knowing the details of divine personality of God. The reason must not be the fulfillment of any selfish desire.
1) Vishnu Datta is the real Brahmin. A Brahmin is not by birth, but, by real knowledge of God or Brahman (Brahma nayatiitiBraahmanah). The real knowledge of God is that God is unimaginable and energetic incarnation in the upper world or human incarnation on this earth is the unimaginable God Himself due to perfect merge. Sage Atri was born as Vishnu Datta. Sage Atri could not salute Datta being His father. Hence, Atri was born as Vishnu Datta to salute to the holy feet of Datta (Heavenly Father came as God in human form). He is called as Vaidika, which does not mean a particular sect in the caste of Brahmins. Any soul, which takes the Veda as authority for recognizing God is Vaidika. Vishnu Datta, not only recognized God Datta in human form, but also worshipped Him without aspiration for any fruit in return. God Datta forced him, several times, to ask for a boon, but, he did not ask for any boon.
He gave food to Datta and worshipped Him without asking for any boon. Since he gave himself to Datta through total surrender, he is called as Vishnu Datta. This total surrender was also to do service to Datta and not for any boon.
2) Vishnu Datta is the real Shrotriya. The Veda says that Shrotriya (means the person, who knows the correct meaning of the Veda or Shruti) is such person, who is never touched by any desire to be fulfilled from God (Shrotriyasyachaakaamahatasya)- . The reason for service to God must be the inspiration gained by knowing the details of divine personality of God. The reason must not be the fulfillment of any selfish desire. You need not say that this is impossible because in the world we see such mad fans of political leaders and cinema heroes in this world, who even give up their lives on hearing the death of such leaders or heroes! Such fan spends all his time and money in the work of such leader or hero without aspiring any fruit in return! Such mad fanatic wasted his life in the love of such leader or hero, who does not even recognize such fan! If this love is diverted to God, such fan will be the topmost fortunate soul because God Datta (Heavenly Father) will merge with such soul perfectly to make such soul as God Datta!