Seizing the Purple Mansion Sword Seed was the most thorough way to erase a Sword Cultivator's legacy, not only the Flying Sword and the Sword Spirit within it but also the reflection of the Flying Sword in the Purple Mansion... It was equivalent to completely erasing everything related to a Sword Cultivator and their sword, which to a Sword Cultivator was like losing another life.
If one still lived but had lost their sword, could they still be called a Sword Cultivator?
Whether the punishment was considered severe depended on the perspective; for a Magic Cultivator, it was simply being fined a Lifebound Treasure, which could be refined again. However, Flying Swords were irreplaceable for Sword Cultivators. It was common for Sword Cultivators to die of a wounded Divine Soul after losing their Flying Swords, and this was not a rare occurrence.