I disagree. There is a massive relationship between QB play and OL play (and setting aside an untalented OC). For the past three seasons we have had completely immobile QBs who are not particularly accurate throwers down the field. They could not scramble and had terrible pocket presence. So, every defense was putting 8 men in the box and bringing them downhill because there was no risks behind them. I don't care how good a line you have, there is just one too many to block on nearly every play.
I have also seen improvement in this line over the last two years. It is not evident from the stat sheet, but we were getting push up front on running plays even with stacked boxes. Hill had time to throw a decent amount of times if he could just move around.
Next year, if Cade or Lainez are healthy, this OL will do its job and the offense will be average. If Hill is back there, the OL will continue to appear to underperform (but they would still look better than this past year). The OL's job is to block, but who they are blocking for is pretty damn critical.
BTW, I would lay money that at least 3 OL that will start this year will get drafted at some point, and the other two will get camp opportunities. Tell me I am wrong.