[FairyKing]

Nyelv's death being so undignified also fits well, at least in my opinion, with the theme of "falling apart" that has plagued both him specifically and the rest of the Stomach family. They began the story at their strongest, with their family whole and united (except the members they themselves cast out or killed), and their business thriving and poised to expand its influence. And then, piece by piece, it all fell apart around them and they lost everything they held dear.

Nyelv started the series as always the smartest guy in the room, conducting whatever schemes and experiments he wanted, too valuable for his allies to get rid of, never having to reveal his secrets or get his hands dirty, able to shrug off setbacks as just interesting new data. But during this time where he's been in focus, his arc has been all about losing that status. He lost his position of power and had to prove his worth to get it back, he's had no choice but to fight directly, his new experiments were under someone else's direction instead of his own initiative, he had to earn people's trust instead of relying on them needing him, he gave away his secrets too early, he was reduced to begging for his life, and finally his last plan literally blew up in his face.