Getting back to Bader and WW2, after the BoB had been "won" there was a need to take the fight to the enemy, and a Big Wing was a better format that small sections of fighters that could be set upon by a mass of locally based German fighters.
However, it was NOT a sound philosophy for the Battle of Britain,as time taken to get the Big Wing assembled would have given German bombers free range over the South East up to London, and allowed the Germans to also mass their formations of fighters, who at that time had more effective armament (cannon) and better tactics (finger four).
His aversion to cannon was also a handicap, as a few cannon shells will inflict more damage than a short burst of .303's....
You only have to look at how many RAF bombers were unable to fend off night fighters with .303 compared to 0.5 in guns, or how ineffective .303 ammo was against the tin V1's....
Dowding got it right for the BoB defence, but at great personal cost and sadness in husbanding his precious resources (pilots), and a new offensive attitude was required for post BoB operations.
But I wasn't there and whilst I have admiration for Bader and his achievements, he did have feet of clay in his attitude post War, that wasn't necessary and demeaned his wartime activities.
You might equally argue in similar fashion about Churchill!