It may be true, but MaMas' info, although fact based also shows that Sean was not in charge of QB development throughout that chart. Neither was he shown in that chart that he was the determiner of having those QB's shown in the chart.
Why /were is it written that the HC, even if by many to be considered an offensive genius must have the trait of being a QB "hands on" developer? Can he not develop a vet QB to a higher level of play? They also have not really had the chance in the draft to get the top of the top QB's that usually are the ones who are seemingly "developed"....The Tom Brady's of the NFL are not common, like falling off trees.
Did he develop Jared? Even slightly? Was putting in a higher caliber O a way of developing the QB position? Don't the QB coaches have a big part of the development process?
IMO the RAMS have not really had the opportunity to pick top 5 to see his ability to develop a QB from scratch....instead he went the way of 2 SB appearances, 6-7 winning seasons.....