Correct. As the life cycle of a virus progress typically each generation of it gets weaker in its effects on the host, but as such it becomes easier for it to spread around because people can be carrying it for longer periods of time without realizing it. The comorbidities are usually the deciding factor at that point - it's like how a person with AIDS usually doesn't die from AIDS itself, they die from stuff like pneumonia or cancers that the body would normally be able to fight off if their immune system wasn't weakened. In the case of COVID, if the person didn't already have trouble breathing (asthma) and they didn't already have a weakened immune system (unhealthy lifestyle or old age), then they're likely going to survive any case of it they come down with.