Regarding Satisfactory: Lets for a moment forget about all the optimisations we could read in FFF over the last years that added up to Factorio becoming as capable as it is now, able to simulate huge bases. Lets for a moment put aside multiplayer, linux support, modding, etc ... Lets for a moment as...

I have not built it yet, but i have to ask:
Why to use the unloading of U235 as trigger?
The U-238 is a way smaller stack. Wouldn't it be way easier to use the unloading of that as trigger?