Is this even controversial?!
They were defeated not once but TWICE.
Hilarious that it’s even a discussion. Let’s revise history today kiddies so that we can make Trump look like big meanie!
They were not defeated in WWI. Germany never entered Paris. We pulled their ass out of the fire.
The point of DeGaulle's June 18, 1940 speech (https://en.wikipedia.org/wiki/Appeal_of_18_June) was:
(a) Admitting the Germans got the jump on France; (b) conceding that the Germans held the main French territory (France itself); but (c) insisted that the war could be carried on from the many and far flung components of the still extant empire.
A similar comparison would be if the USA was occupied, but patriots still held TX, AK & HI. Would the war be over?
A second and very important point is this: because Hitler had driven out all the Jews, the Nazis never even began preliminary investigations into atomic weapons.
While the US was of course first, both FR & UK were were right behind. While we can't re-write history, without the development of atomic weapons, the Germans were going to be eventually defeated.