You're taking an example of how real world people were primarily self sufficient with minor income and making a gigantic leap to "halflings make moonshine". No. No one said halflings make moonshine other than you. No one says they have to have pepper other than you.That would be post 850 that started the line of halflings personally brewing/distilling whatever they drink @Vaalingrade happened to have a relative that made moonshine.
That's a pretty major difference because not doing that means they need to produce everything that would be gained through trade by producing it themselves. Once they start engaging in trade you have a different set of problems being dismissed by the schrodinger's trade
No my argument is that someone engaging in such monumental levels of production doesn't have the time to engage in the sort of weaving long distances through the forests shunning the use of carts wagons & trade. If that person does have that much time then what they have is an incredibly valuable tract of land or is themselves far too skilled to exist as a group of free people not forced into production.
Moonshine is legal to buy. It's also legal to produce. Despite recent history so is absynthe
From time immemorial many people have either been completely or largely self sufficient. Are spices in high demand? Sure. Are they necessary for survival? No. Is moonshine one way of making money? Yes. Is it the only way? No. Do halflings even care much about making money? Again, no.
When I propose what I think would be logical for halflings to produce for sale if they care (finely crafted goods with low weight, high value) it gets discarded as "homebrew". Which is true It's just one example of nearly endless possibilities. Could one of those possibilities include alcoholic beverages? Sure. People have been making alcoholic beverages forever without access to sugar. So maybe in one person's world they make a highly sought after alcohol, in others they make lace.
You grasp every tiny straw people throw out there to make entire fields of strawmen.