59k deaths out of 54 million infections is a 0.1% fatality rate. While the average fatality rate for COVID19 using global statistics is around 4%, let's use South Korea as an example because they have been testing much more frequently than other countries. The South Korea fatality rate is about 1%, so we'd see 540k fatalities in the US for similar infection rates.
Also, initial R0 transmission statistics for COVID19 look to be in the 2.5 range, where the R0 for seasonal flu is around 1.3.
So COVID19 is 2x as transmissible, and 10x as deadly. I don't think the conversation is around dismissing the seriousness of the flu, and more around emphasizing the risk of COVID19.