Photo Antoine Vaillant (antoine87)

Slightly off topic he mentioned on his youtube channel (24/2/2022) he has quite a serious cardiac/heart problem.
Not a problem. He's at an elevated risk for a problem. It's a calcium score test that measures the amount of calcium in the arteries. High calcium in the arteries=high risk for a heart attack. He has really high calcium deposits, he's in the 99th percentile. However, he doesn't currently have any blockages.