Over 22 weeks in 2017-2018, there would have to be an average of almost 3000 a week. For this year, with 23,000 deaths, the average would be near a thousand.
The chart is garbage.
I get that the coronavirus spike is much higher but its drop in ever country so far is a lot faster than the seasonal flu. I doubt we get anywhere near 100,000 deaths.
If you changed it and put your preferred numbers on it, it would still look basically the same.
The whole point of mitigation is the rate, and the chart clearly shows the difference in rate between the two diseases.