I don't think that is accurate. At least by my measurement, it is misleading to suggest that the sport band holes line up exactly with the measuring tool. They are close, but they do not line up exactly. The spacing on the solo loop sizing tool varies, so the distance between the line of 1 and 2 is less than between 11 and 12. If you flip around one of your measuring tools, so match 1 with 12, I think we will be able to see that easily. Using my caliper (to lazy to print another tool and take the pic), there is a difference of half of size if I compare the first four sizes (1-4) to the last four sizes (8-12).
I also think Daring Fireball has the bands lined up wrong, and so size 8 matches the 2nd smallest pin hole on the M/L band (not the 3rd). The M/L and S/M do not line up either, so the S/M is half a pin hole smaller, but the corresponding pin hole on the S/M to Size 8 would be the 5th largest, not the 6th.