In a way, the Pandavas have already mourned the death of Kunti and Dhritarashtra, accepting that they would die out in the forest while performing austerities. While it's possible this passage is warning about the dangers of taking asceticism too far, it seems more likely that in fact it's a celebration of Kunti and Dhritarashtra’s last days, showing how they gave up everything in their pursuit of asceticism, finally achieving total detachment from the world and accepting their inevitable deaths.