The 60,000 figure seems to be an overestimate.
https://www.reuters.com/article/us-flu-usa-idUSN1223579720100212
You are right that 60,000 is high but after 10 years the CDC still deals in ranges with 12,000 the midpoint. They really don’t know how many died with the top figure being 18,800. I’m betting we won’t reach that with 19.
And H1N1 is still with us as part of the annual flu. It is 50-60% of the flu cases and probably kills about the same as it did in 2009-2010.