Is Jana Gana Mana an ode to the King?

87 years ago, Tagore himself dismissed the claim that Jana Gana Mana, the national anthem of India, was an ode to King George V.

I should only insult myself if I cared to answer those who consider me capable of such unbounded stupidity as to sing in praise of George the Fourth or George the Fifth as the Eternal Charioteer leading the pilgrims on their journey through countless ages of the timeless history of mankind. - Tagore in 19 March 1939