"how are those able to be counted as all covid deaths, when deaths fluctuate and positive tests themselves have been overblown?"
? Excess deaths are not all counted as covid deaths. There is a 10,000+ difference in more excess deaths compared to covid deaths...as you would logically expect. If the reverse of that were the case (more covid deaths were recorded than total excess deaths), it would obviously point to a possibly erroneous or dubious accounting of deaths. I bring up excess deaths merely as an indicator or support for the number of covid deaths. It is possible that a different variable besides covid exists that has killed thousands more this year than usual but as I stated before, I'm not sure what that variable would be.
Yes, deaths per year fluctuate. That's why there is a range of normal deaths per year instead of a fixed number. Numbers above that range are considered "excess".
Not sure what you mean by positive tests themselves have been "overblown". How so? I'm actually of the opinion that positive tests have been underblown.... 1. It seems considerably more likely to get a false negative than a false positive (user error, etc). 2. In the beginning of this, there were simply no tests. Then later we had some but not enough for everyone. 3. There are many people who have coronavirus and are asymptomatic. It was only recently that there have been circumstances requiring testing of broad swaths of people with no symptoms (at their jobs for one). Otherwise, most people with no symptoms don't bother getting tested. 4. I would imagine some % of the population is actually fearful or skeptical of getting tested even if they think they might have it.