I wouldn't say he neglected it. Just hasn't been effective at it to this point it would seem.
Defensive Players Drafted (I just went through round 6 of the drafts...ain't much relative beyond that)
2012 - Brockers, Jenkins, Johnson
2013 - Ogletree, McDonald, McGee
2014 - Donald, Joyner, Alexander, Gaines
2015 - BIG FAT NADA
Total - 10
Offensive Players Drafted
2012 - Quick, Pead, Givens, Watkins (6), Zeurlein
2013 - Austin, Bailey, Jones (4), Stacy
2014 - Robinson (1), Mason, Gilbert (QB)
2015 - Gurley, Havenstein (2), Brown (3), Mannion, Donnal (4), Sasser, Wichmann (6)
Total - 19 - Even if you take out 2015 (for whatever reason), that's still 12.
2 QBs
7 OLinemen - a 1st, a 2nd, a 3rd, 2-4ths, a 5th and a 6th.
That's hardly neglectful as measured by the number of resources thrown at the offense. It seems very balanced actually. And I think in every year the drafts were given high grades by analysts and fans alike.
Now...The Quality, Evaluation or Development of the players on the Offensive side of the ball can certainly be called in to question.
Scouts, OC, OLine Coach (sorry Boudreau...I liked you...but you've lost me), Sherman...and everyone else that has to do with Offense here --->> http://www.stlouisrams.com/team/coaches.html