I'm far more interested in the quality of Recs, not the quantity. How well does the alum know the PNM? Did she provide additional info/insight on the PNM's personality/character or just repeat what's already on her resume?
There is no such thing as too many Recs IMO, though 22 is overkill. I bet this PNM was known as "Rec Girl".
I think more than 2 or 3 "Info Only" Recs from alums who don't know the PNM at all is pointless. All that tells me is the PNM found a bunch of random alums.