That's for the 2017-2018 season and it was the worst flu season in quite some time. The article even says it's the worst flu season in at least 4 decades and way outside the normal range:
"In recent years, flu-related deaths have ranged from about 12,000 to — in the worst year — 56,000, according to the CDC."
This is not to mention that these estimates include non flu deaths to compensate for the fact that not every dead person gets tested for the flu and even those that are, often wouldn't be documented as flu deaths. For example, if COVID-19 was merely a minor outbreak, COVID-19 deaths would be counted towards flu deaths, as the cause of the death would be viral pneumonia and viral pneumonia is statistically likely to be caused by the flu.
The reverse isn't close to true - we're for the most part only attributing deaths to COVID-19 when it's either a confirmed case or otherwise overwhelmingly likely to be caused by it. It's a certainty that COVID-19 will end up killing more people in the month of April than the flu kills most years.