The amount of people in public with hacking coughs, running nose, sneezing etc. is proof that not everyone does this.
Not everyone can take time off work or have support/provisions to not leave the house until they are fully recovered from a virus etc.
The point is covid isn't the only virus around. The common cold can kill. As can chest infections, stomach bugs etc. I know a healthy 19 year old who died following a chest infection. Her family aren't blaming the person she caught the cough from.
Covid deaths make up so few of the total deaths each day. We need to accept that it is just another cause of death now.