If they had got covid before knowing about their heart issues they would have died!
No. Incorrect.
They may have been at increased risk but its not a certainity that if you have a heart condition and change covid-19 you will die. Which is what you are saying.
Thats a good example of an inability to assess risk. There are a lot of people processing this as 'if i have x condition and catch covid I'm going to die'. Which isn't true. It highlights the problem with the messaging there is being given and how people are hearing it. There is a difference.
You want to minimise the chances of getting covid, if you have a heart condition, because you MAY be more at risk. But equally, you could catch it and be asymptomatic. We don't know how the disease affects us fully. Not all heart conditions may be a problem. We just don't know.
We know it is a respiratory disease and it may be a vasular disease. You can cavet that by saying that early fears about it affecting asthmatics badly seem to be over stated on the evidence that is emerging. But we don't KNOW that yet for sure.
We've had lots of messaging that over 80s are very high risk, but we've had people over 100 recovering and this has been interpretated that under 30s have no risk at all too.
The nuance is the bit that people don't fully get.
Most people don't understand it when medical risk is explained. This includes doctors! (Much research into how doctors understand risk and explain risk - which is troubling in places!)