The Polish contribution to breaking Enigma is well documented and beyond dispute. When the Polish government shared their work with the British, the first question the Brits asked was, “What is the layout of the Enigma keyboard?” The top Polish cryptographer struggled to keep a cool manner at what he thought was a trick question, and he replied “QWERTY, of course.” The Brits had not yet figuered that out.
A major ENIGMA weakness was created when some fool decided it was a good idea to not allow any single encrypted character to be encrypted by the same character in the pseudo-randomly generated key... a character of the plaintext could not be encrypted by the same character in the key.. plaintext A would never correspond to A in the key sequence... a truly moronic mistake that gave Bletchley Park a great gift.
Actually you are quite correct...
My initial reaction, which I retract here, was a result of needing some sleep...