Saints record on UDFA's making final roster (in the Sean Payton era: 2006-2019)

The quality of our undrafted free agents has gone down in recent years, though last year was a good year with Deonte Harris and Shy Tuttle.

However, the number of UFAs who have made the final roster has remained constant. And the number making the roster undermines, doesn't it, the view, somewhat popular on this forum, that the Saints don't need many draft picks because so few can made our final roster given our level of talent. If our talent level is so high that we should not expect four or so draft picks to make the final roster, then why are four or five UFAs each year making the roster.