Well, here is the deal and what many fail to remember, including myself at times. I believe Div1 FBS teams are allowed 85 scholarships. Iowa currently has a really young OL unit on scholarship, so it's probably a numbers game and they've been manufacturing and coaching these guys all this time. Sometimes you just don't know what you have for players or if they are going to work out. There might be something there with experience, but at this time they have some deficits to work out.
Now, what are you going to do with all these young linemen you have on scholly's? Perhaps, they should have used the scholly's from Taylor and Jones to use on more linemen? The WR position has a depth issue now. That wouldn't work and would have gone over well with fans. You see where I am going? It is a complete numbers and roster spot/depth deal. They know the number at each position and how many scholly's they want for those positions. What are you going to do with all these young linemen, tell them to go and pound sand?? Ya can't go out to the portal if you don't have any scholly spots available to give right away. You have to have some open scholly's. What you going to do, politely ask them to walk on?
Going out to the portal and loading up on OL sounds good, but it just doesn't work that way because of the numbers and scholarships you are currently dealing with.