Kramnik has accused of online cheating virtually every grandmaster bar some of the top 10 and none in the community gives Kramnik much weight on this topic.
OP is not blaming him specifically for Danya's death. Irrespective of that, Kramnik is behaving like a total cunt and treated Danya like absolute shit for no reason beyond his own pathetic delusions.
Naroditsky isn't even the youngest person Kramnik has bullied: he's doxxed fucking children and accused them of cheating.
I watched Hikaru's YouTube video this morning and it's clear that Kramnik's accusations were getting to all of his victims. Naroditsky was giving Kramnik's opinion weight, whether he took his own life, or passed of other causes.
So yes, Kramnik needs to be shunned and frozen out of the chess world and any decent company for the way he's behaved.
If you are famous, you will have haters, it's part of the deal.
I agree with the crowd who say that mental health issues should be taken seriously instead of kept under the rug.