Ok, might not be a stigma, but let's call it like it is. The AAC is primarily composed of teams that cannot recruit.
Between 2013 and 2019, the AAC had 33 top 100 recruits according to 247, 34 according to Rivals, and 32 according ESPN. Outside of UConn, Memphis, and Cincinnati, the rest of the AAC had just 5 on 247, 4 on Rivals, and 5 on ESPN.
AAC teams with a top-100 recruit in either 247, Rivals or ESPN from 2013-2019: 6/12 (UConn, Memphis, Cincinnati, USF, SMU, Temple)
For the Big East comparison, from 2013-2019, it was 53 top 100 recruits according to 247, 63 according to Rivals, and 62 according to ESPN.
Big East teams with a top-100 recruit in either 247, Rivals or ESPN from 2013-2019: 10/10