To have a communicable disease as third leading cause in death in the US is a huge deal, and I don't believe has been the case since 1918. It will likely end up being the leading cause of death in both NY and NJ this year and potentially other states depending on how things go in the fall.
I actually think people care a great deal about it, but the people who don't are get more amplification via social media. If the majority of people didn't care about the disease or didn't take precautions, it would have already gone through the US population with way more deaths than now as a result. You see obvious population level risk aversion over the whole world in both mobility and open table data, which has slowed down the disease spread considerably from its native Ro.
https://www.the-scientist.com/news-opinion/no-the-cdc-has-not-quietly-updated-covid-19-death-estimates-67902
Comorbidity does not mean a preexisting condition, so this 94% claim you're making is false. In the case of Covid, many other causes of death can be listed on the death certificate along with COVID. 5 of these listed here are or can be caused by COVID itself. Obviously, many older people do have preexisting conditions.
The top comorbidities, or underlying medical conditions in a COVID-19 death include:
Influenza and pneumonia
Respiratory failure
Hypertensive disease
Diabetes
Vascular and unspecified dementia
Cardiac arrest
Heart failure
Renal failure
Intentional and unintentional injury, poisoning and other adverse events