@songdw
I'm currently at 199 points.
With 100 villagers, you can collect 15-30 logs in 6 hours, with a median of 22.5 logs.
The lumber camp holds 100 villagers, 100 villagers collect 4.1 logs per hour, 24.6 logs in 6 hours.
The gain is positive, for stability you can build a logging camp. But people may have better luck.
The uncertainty is whether the gains from logging camps are fixed and will change as you level up. The gain from direct villager collection seems to change as you level up, and when the minimum gain from 100 villagers is greater than 24.6, logging camps are pointless.