Celtics are only mentioned for the Olynyk pick which the article notes favorably as still being in the league. The Cs are also listed in the chart, but it's difficult to glean what led to the OP's eureka moment from that chart.
In any case looking back on the 2006-2015 timeframe covered, Cs only had 1 lottery pick (Smart) and did well in the late 1st (Rondo, AB, Sullinger, KO, and Rozier, missing on Giddens, JJJ, Fab, Young and Melo) Rondo was one of the best ever for where he was drafted and AB is looking like that also. The Cs also picked Powe and Big Baby out of 4 early 2nd round picks (31-40) and E. Moore out of 7 late 2nds. Three 1sts were traded to clean up cap room in 06, and get Ray and to get KG in 2007.
Overall. it's a pretty impressive run especially when you add the later heists that have not completely played out.