>>280097183
In Control's case death is doubly as impactful since most of Makima's wisdom comes from scanning numerous peoples' and devils' memories, and adding them to her own.
If Yoru died, the next War Devil would probably be a similar type of retard as she is.
Nayuta lost all of the wisdom that Makima acquired which is why she came off as a pretty regular, bratty devil, more akin to Yoru and Power than Makima.