I am not sure that is necessarily true, a kickback will certainly ruin the cut, and your day. When I make a cut like that I set up a stop block, use a miter gauge on the left side and let the off cut fall free of the blade. Just set up the stop block so it clears the work piece before the cut is complete.
I am wondering if a wine barrel could be made using a canoe joint. I know that traditionally, barrels have a bulge in the middle, I believe this was just to make them easier to move. I am thinking that they could just be cylindrical. If a hot tub can hold water, why not add a top, and hold whiskey or wine.