I wouldn't compare the ToS to anything that you can't get multiple copies of. It's not an either-or situation there. When deciding what to delete looking at your worst producer makes more sense than your best.
If you want to compare the supplies from the ToS you need to see
How often you scout and how many supplies that gives you.
then compare it to
How many supplies your workshop gives over the same time period and how much space that workshop + population + culture requires.
Only then can you fairly compare the 2, and although it's been a while, the answer was always that the ToS gave more supplies per day as long as you scouted 3-4x a week or more even with a level 2 ToS and no PoP spell active. Then the KP per day was just an added bonus.
@everyone If you post your info we can do the math and see how the ToS fares
1. What production times do you set your workshops to?
e.g 9h x2 + 3hx1 or 9hx1 +3hx4
2. What's your max level workshop?
3. What's your max level residence?
4. What is your usual culture bonus?
5.
How many supplies does your ToS give per scout? (if you don't have a ToS you can still check it
6. How often do you scout? (optional, we can make this the answer instead)