This is an incredibly intellectually bankrupt way to evaluate Covid deaths. If we define "excess deaths" the same way the above argument does (i.e. simply by looking at how many more people died from all causes this year versus last year) then the U.S. has averaged over 46,000 "excess deaths" per year from 2010 to 2018 (with a standard deviation of over 22,000). One year, 2015, had 86,212 "excess deaths" when compared to 2014.
So even if there was no Covid, we still would expect tens of thousands of "excess deaths" by this point of the year. As such, it is a fallacy to claim "we have 210,000 excess deaths this year, therefore they are all attributable to Covid." It is perfectly reasonable to say that out of 210,000 excess deaths we've seen this year, 155,000 are from Covid and 55,000 are from other causes which would have happened anyway.