U.S. deaths increase most years, so some annual rise in fatalities is expected. But the 2020 numbers amount to a jump of about 15%, and could go higher once all the deaths from this month are counted.
One thing the article doesn't say is the size of the usual 'expected' increase, but if I recall correctly it's about 2%. So a 15% jump would be large.
The big question is why is the US so much more badly affected than other places. Sweden, which famously did very little, is on track to see a small increase of perhaps 2%-3% this year over 2018, or just a few thousand deaths, almost not noticeable on the scale of a country.
https://www.statista.com/statistics/525353/sweden-number-of-...
NB: 2019 in Sweden was the least deadly year for a decade which is one reason comparisons of Sweden vs Norway etc are misleading: the question is not "why did Sweden have higher deaths than Norway in 2020" because it would have done anyway, simply due to catching up from 2019. The question is "why is 2020 going to be a normal year in so many countries but not the USA"?
This is somewhat different to the weird defiant “taking precautions is bad, we must deliberately do high risk things” attitude that seems common in the US.