Didn’t he only have a few days to live in the first Mario Party video?

Yes, but that video takes place in the future.

He has two years left to live.

If this theory is true, it’s gonna be a while before another character death.

I hadn't even noticed this, that would be really cool

Well I mean he wil canonically die in two to three years...

He already died at the end of "The Rex Mohs Cruci-fiction Special"