I've noticed a problem that is common in new machines and recipes that exclude productivity modules, that if you insert a module BEFORE choosing a recipe, it will keep the module. Which means that you can have even more free stuff.

It would be fixed by just removing productivity modules from the fermentation plant in general instead of the recipes

Recipes SHOULD ignore the Productivity effect even if you manage to install Productivity modules in the machine. That said, there's no real harm in removing Productivity anyway. I'll get to it in the next few days, most likely.