100%. We will never know.
But no matter the degree of influence by the Coach or even the owner, it is the GMs job to own the draft from a public perception standpoint point.
I personally believe Sean had a big influence. Larger than most coaches and it explains some of the goofy draft decisions like Basham, trading back with KC to get Keon, the defensive draft last year, etc.
When Beane is unleashed he gets trades done like the Allen shell game in 2018. Trading up for Kincaid to screw Dallas.
Everyone gets a pass for Elam in my opinion. Bills were in a bad spot. Unless Sean preferred Elam and handcuffed Beane from getting McDuffie.