I think it let's the Rams pay the top of the roster and have depth.
Tons of the starting Cs, Gs, NTs, S and LBs in the league came in round 4-7, so they are getting Gs with the same in-position value as an early round LT inside the position.
Is the starting gap between Left Tackles 1-5 in the league and Kolton Miller any different than the gap between Cs 1-5 in the league and the MSU C the Rams drafted?
I think they feel good at the premium talent positions, save elephant backer, and are just going to make sure they solve the depth problems with numbers.