It's an interesting take. From my data, I have Miami with a total of 17 commitments from Northwestern since 2002:
2002: Travarous Bain
2003: Leo Waiters
2004: Khalil Jones
2004: Romeo Davis
2005: Christopher Barney
2008: Marcus Forston
2008: Aldarius Johnson
2008: Benjamin Jones
2008: Jacory Harris
2008: Sean Spence
2008: Tommy Streeter
2008: Kendall Thompkins
2013: Artie Burns
2014: Mike Smith
2014: Ryan Mayes
2018: Nigel Bethel
2019: Samuel Brooks
Just 5 since the mammoth 2008 class. So per your question, how much is it Miami "failing to recruit", and how much is it SEC domination and influence?