I’m not sure if this is a bug or a balance change. This most significantly impacts Nukies as now they only have 200 welding fuel available on the Nukie planet. Flamethrowers don’t work the same without them 
I couldn’t find anything in the PRs about the changes. Does anyone know if this was intentional?
It was intentional, and also fixed draining foods into the chemmaster at roughly the same time.
CE started with, and science could make experimental welders, and they were infinitely regenerating, which in turn meant every minute or so, you could generate 10k units of welding fuel, or an entire fuel tank worth of fuel.