I'm not sure what your criteria for "homegrown" is, but here's a breakdown across two separate lists:
Last 10 AA's for Rutgers
Shawver
Slavikouski
Rivera
Bulsak
Poznanski
Turley
Ashnault
Theobold
Suriano
DelVecchio
Now if homegrown for you means from New Jersey, then here:
Rivera
Poznanski
Ashnault
Theobold
Suriano
DelVecchio
6/10 ... not too bad.
If homegrown means started their career at Rutgers, then:
Shawver
Poznanski
Turley
Ashnault
Theobold
5/10, unless you count DelVecchio never competing for NC State before coming here.
On both fronts, those numbers ain't too bad, especially in the age of NIL & transfer portal mania. Do I agree that they need to get a hold of more elite NJ talent? Absolutely. But it does not mean they solely rely on the leftovers of other schools. In a perfect world, Rutgers can recruit top NJ talent that won't bail at the first sign of adversity (see: Glasgow, Aragona), but this world isn't exactly perfect.