No need to check his math, just check the last spreadsheet to see the absurds, it reaches the conclusion that people over 80 that get vaccinated have 50x less chances of dying from heart diseases.
This guy managed to find a cure for heart diseases by failing at math and mixing data classification.
You might want to zoom in on the webpage spreadsheet before you rake him over the coals. The only way you could draw that conclusion is if you missed a 0. The chart states the chance of an 80 year old dying of a heart attack in general is .0032% , compared to from covid .2% and vaccination .02%. So an 80 year old immediately raises his risk 6.25x of a heart attack by getting the vaccine (.02% divided by .0032%), vs 62.5X times from If they contract covid (you have a 100% chance of getting the vaccine when you agree to it vs. a less than 100% chance of getting covid). This is probably why he didn't highlight that part of the table.