I am not sure about the compounding 40%. I don't know enough about infectious disease transfer. The previous poster had asked about the 40% so I was giving him the source. Personally I agree with you 40% is still better than 0%.
As far as heart disease, in my opinion it does drastically impact other people. Heart disease patients take up hospital beds, they take up medical supplies, they take up doctors time. The CDC says ~1 in 4 deaths is due to heart disease. (https://www.cdc.gov/heartdisease/facts.htm) It is a massive drain on our medical system (perhaps the greatest).
As far as heart disease, in my opinion it does drastically impact other people. Heart disease patients take up hospital beds, they take up medical supplies, they take up doctors time. The CDC says ~1 in 4 deaths is due to heart disease. (https://www.cdc.gov/heartdisease/facts.htm) It is a massive drain on our medical system (perhaps the greatest).