I would agree, except for the fact that I read Graeber's Bullshit Jobs and was quite convinced by his research showing that anything between 15-50% of employees across many surveys believe that their role is useless.
You can believe your role is useless and be wrong. It may be that the processes were grown in a time when the needs were different, and hopefully those needs were for a worse version of today - a kind of bad situation that might just come back around again.
A system in which every resource is 100% utilized has no slack or adaptability.
A system in which every resource is 100% utilized has no slack or adaptability.