Dr. Shivram Sharma, Sanskrit scholar from Varanasi, writes in his review of Śrīrāghavakṛpābhāṣyam on the eleven Upanishads that it is replete with novel thoughts and Sanskrit derivations, and that Rambhadracharya has shown Rama as the Pratipādya of the all Upanishads by the wonderful dexterity of Vyutpattis of Sanskrit words.
These commentaries were released on 10 April 1998 by the then Prime Minister of India, Atal Bihari Vajpayee.