The counter-argument is weak when one considers that Britain lost fewer people in WW2, being in the position that it feared if it didn’t intervene in WW1.
Moreover, it didn’t put a great value on avoiding that position circa 1932 to 1939.
Yes, Europe on the Continent would have been a bit darker if Germany had won, yet people still dined outside at street cafes in Paris even under an obviously much harsher and nastier 3rd Reich circa 1940-1944.
Kaiser Wilhelm was tame compared to Hitler, and besides, what the French lived under was hardly Great Britain’s concern.
So which would have been better to have right across the English Channel, a relatively-benign France or an expansionist Germany?