Not as a defense of Kramnik's behavior, but Naroditsky's death was determined not likely to be suicide:

probable cardiac arrhythmia tied to systemic sarcoidosis, with methamphetamine/kratom as contributing factors.

I'm generally skeptical of causal narratives like this, but Naroditsky talked openly and at length about the ongoing physical and mental health effects of Kramnik's nonsense. So in this particular case, I'm comfortable blaming Kramnik either way.