The manipulation of the scales make this look more comparable than it is. A lot more comparable.
The 1999-2001 scale runs from around 1250 to nearly 5000 - the top of the scale is 4x the bottom. The 2019 scale runs from 6500 to 10000 - the top of the scale is 1.5x the bottom. That's a factor of 3+ difference between the scales.
So the September to now run up in the 1999 period is 2750 to 4000, or about 45%. The runup that "matches" it in the same time period on the 2019 scale is from 8000 to 9000, or about 12.5%.
This graph actually says the opposite of what it purports to say.