To be fair to the person you replied to, homebrewing alcohol was illegal in the US until 1978 and you still aren't allowed to distill at home (for human consumption) without a distilled spirits permit or (for fuel use) a federal fuel alcohol permit.
Yet, a Hillbilly Flute can be purchased legally online and delivered to your home.
Well duh obviously everyone that orders a still is going to use it in their living room as an art installation.
The presumption is that they have the permit.
Unlike firearms, the seller does not have to verify it.
You don't need a permit to buy a firearm unless it is something that is NFA and then you just need to go through the appropriate tax stamp process which is effectively a permit for that specific firearm/destructive device/accessory.
My point is that with alcohol is easy to circumvent the ban.
And, just guessing, even easier than growing weed.