Devarshi Narada is treated as the first communicator because:

Devarshi Narada is treated as the first communicator because he reports from the spot, mediates among the parties and thinks for the betterment of society.

Reporting from the spot makes him a gatherer and carrier of news across worlds.

Mediating among the parties casts him as a bridge who reconciles opposing sides.

Thinking for society's betterment gives his communication a constructive, welfare-directed purpose.

Claiming he always speaks against others misreads his role, which is reconciliatory rather than divisive.

The remarks that he is not everywhere or merely faithful to a lord miss the reason for his standing as first communicator.