This is just wrong. You can say that Ollie's recruits didn't pan out, but look at the 2 classes after the championship based on recruiting rankings:
2015: Jalen Adams #23, Steven Enoch #84
2016: Alterique Gilbert #32, Juwan Durham #50, Vance Jackson. #77, Mamadou Diarra #126, Christian Vital #166
And, Ollie's class in 2014 had Daniel Hamilton #17 and Sam Cassell Jr. #18 JUCO
On paper, UConn was recruiting well under Ollie, but some of the players had injury issues and some players were not happy with their roles. Add in his divorce and pushing away Calhoun and the program collapsed symbolized by the 2017 recruiting class.