23 miles is pretty fucking big for a lake. Just reading the Wikipedia on it shows what a dumb criticism your comment is:

At 56 km2 (22 sq mi), Loch Ness is the second-largest Scottish loch by surface area after Loch Lomond, but due to its great depth it is the largest by volume in Great Britain. Its deepest point is 230 metres (126 fathoms; 755 feet), making it the second deepest loch in Scotland after Loch Morar. It contains more water than all the lakes in England and Wales combined, and is the largest body of water in the Great Glen, which runs from Inverness in the north to Fort William in the south.

Lake Superior is one of the largest lakes one the planet. That’s a stupid standard to hold lakes to. It’s like saying Chicago isn’t a big city because it’s smaller than Tokyo.

If you’re trying to refute an idiotic theory it helps to not sound like an idiot yourself.