I've seen Imp make this claim, and my interpretation of it was always that 90% of people who developed myocarditis would 'drop dead',

As far as I know, he made this specific claim only once. He actually claimed that 90% of people would get myocarditis, based on his brilliant calculations.

In my view, you are deliberately misinterpreting what he said to 'win' a pointless internet argument. How sad.

I mean, going after the Imp is like shooting fish in a barrel, so I don't even keep receipts. But he's honest enough not to deny it, so I'm not misinterpreting a thing.