From one perspective, one may see Dhṛṣṭadyumna’s brutal end at Hara’s hands as a punishment for the excesses of Agni (whose avatāra he is) during Khāṇḍava-Dahana episode.
The Dahana itself is ultimately rooted in Agni’s indigestion, which itself is rooted in a Śivalīlā.++

For the extra-observant & well-read, this indigestion is not the first time Śiva has caused Agni to put up with misery by means of eating.

Lesson being that Agni should have put up with what Śiva caused him to undergo. His resisting it caused so much carnage & pain & a horrible chain reaction to be suffered by Arjuna’s descendants.

If you read the Khāṇḍavadahana story, it’s remarkable because it so clearly brings out what the Śaiva śāstras call “mala” or “Paśutvam” of several characters.
Evidently, for those who can take a bloody hint, the true Pati of all Paśus will also become clear. 🙂

From a Tattvajña perspective, it could also be Śrīkaṇṭharudra’s attempt as the Pralayākalottama to induce mala-paripāka in Agnideva by making him see the problems inherent in the apara-bhoga & apara-adhikāra that he (Agni) enjoys as a deva. - (Siddhānta Śaiva Deep Dive)