These instructions of Prahlāda Mahārāja stress the transcendental position of devotional service. As confirmed in Bhagavad-gītā (14.26) :

māṁ ca yo ’vyabhicāreṇa bhakti-yogena sevate sa guṇān samatītyaitān brahma-bhūyāya kalpate

“One who engages in full devotional service, who does not fall down in any circumstance, at once transcends the modes of material nature and thus comes to the level of Brahman.” One who fully engages in the devotional service of the Lord is immediately raised to the transcendental position, which is the brahma-bhūta stage. Any education or activity not on the brahma-bhūta platform, the platform of self-realization, is considered to be material, and Prahlāda Mahārāja says that anything material cannot be the Absolute Truth, for the Absolute Truth is on the spiritual platform. This is also confirmed by Lord Kṛṣṇa in Bhagavad-gītā (2.45) , where He says, traiguṇya-viṣayā vedā nistraiguṇyo bhavārjuna: “The Vedas mainly deal with the subject of the three modes of material nature. Rise above these modes, O Arjuna. Be transcendental to all of them.” To act on the material platform, even if one’s activities are sanctioned by the Vedas, is not the ultimate goal of life. The ultimate goal of life is to stay on the spiritual platform, fully surrendered to the parama-puruṣa, the supreme person. This is the object of the human mission. In summary, the Vedic ritualistic ceremonies and injunctions are not to be discounted; they are means of being promoted to the spiritual platform. But if one does not come to the spiritual platform, the Vedic ceremonies are simply a waste of time. This is confirmed in Śrīmad-Bhāgavatam (1.2.8) :

dharmaḥ svanuṣṭhitaḥ puṁsāṁ viṣvaksena-kathāsu yaḥ notpādayed yadi ratiṁ śrama eva hi kevalam

“Duties [ dharma ] executed by men, regardless of occupation, are only so much useless labor if they do not provoke attraction for the message of the Supreme Lord.” If one very strictly performs the various duties of religion but does not ultimately come to the platform of surrendering to the Supreme Lord, his methods of attaining salvation or elevation are simply a waste of time and energy.