There will be good value at the position at 52. Teams aren't going to be in a hurry to take RB in this draft due to the depth of options. So not only is the group at 52 likely to have a RB the Rams like (Helaire & Akers likely to be there IMO), but it might have a higher value option slide to them.
The Rams' single biggest statistical drop in 2019 was the run game. And it wasn't just a drop it was more a plummet, like it fell into a chasm. So yeah even for those of us who feel the OL is important too (I'm in that group) we need a guy who can eat carries.
Helaire is interesting because he can catch the ball on third down but he's also a load of a back with great contact balance. So yeah if the Rams take him at 52 I will not complain.