Because people are biased. Why do doctors prescribe meds more when they have pens and clocks with the name on them? Why did the coroner for George Floyd say his COD was due to pre-existing conditions?
We are seeing huge numbers of deaths from pneumonia and dementia. Dementia itself doesn't really kill if you use your previous post. The underlying inciting event in these cases is COVID. Everyone knows it. You can be as concrete and literal as you want, but don't distort reality. If someone goes into respiratory failure due to COVID infection, COVID was the cause of the respiratory failure,, and therfore COD.
There are doctors that use their power to paint a narrative. Doctors aren't altruistic, flawless beings. I am one. I see it every day.
EDIT: This is why excess deaths is probably the best measure of death due to the disease. This is a lagging indicator, but likely give the closest approximation to actual impact.
I agree with your last line (or edit) entirely. I've said as much myself several times.
I don't entirely see why there would be a consistent bias among doctors in either direction, though. And bias is one thing but you said 'lies' - lying is a strong accusation. I'm reluctant to believe doctors would outright _lie_ about cause of death, on any sort of large scale.
What I keep seeing are people claiming, sans evidence, that the bias is the other way - that doctors are blaming COVID when they shouldn't. I personally suspect, if anything, the death numbers are a bit higher than are reported. But, as you say, it will take an analysis of excess deaths to work out the truth. That is, I understand, what they do for flu (though also, as I said, I've seen it claimed that that figure is in turn overestimated).