That doesn’t match with Carlsen’s past behavior (he’s been consistently graceful in defeat over many years), isn’t what Carlsen did (he refused to play again, he didn’t even directly accuse him of cheating let alone call for his expulsion or harass him), and there isn’t no evidence (just weak evidence).

Just consider, for a moment, the possibility that the kid did cheat again. What could Carlsen have possibly done that you wouldn’t call a tantrum? What he did was the most polite, least confrontational, thing possible.

We don’t currently have sufficient evidence that he cheated, but don’t confuse uncertainty for evidence towards either side.