Bean counters
In my opinion, this is a sign bean counters and powerpoint creators have taken over and org.
Why? It does sound all good and reasonable. Hey, in my company we have a three people sign off... But is it reasonable?
I suspect that approvers won't have enough time or expertise 5o fully understand the consequences of the changes or the quality of them. I think so because I myself frankly don't have time except for the most egregious issues, and subtle breakage of chain of supply would mean subtle changes.