Tony Gilroy on Charlie Sykes (Sykes was quite the fanboy let me tell you), was basically...when you are in the situation of autocracy threatening democracy (as I'm sure everyone here including the people cheering it on agree) policy differences are out the window. You are at the stage where the only moral position is to fight the autocracy.
In Andor, Gilroy used the example of the French Resistance in WWII but there were many others as well where there were all sorts of petty squabbles between factions of the resistance groups. I gather Charles de Gaulle's forces were in gang warfare against communist resistance forces all over London during the run up to D-Day.
Brooks is like those Monarchist resistance groups still pining for the Hohenzollern kaiser to return to Germany.