The V type rockets were named V for Vengeance - the Germans were retaliating for the British terror attacks on German civilians.
You apparently think that you know more about terror bombing and WWII than the British Prime Minister and the RAF officials who ordered the attacks - Winston Churchill and Air Secretary Spaight.
Where are you getting your facts? Please give quotes and cites that disprove what Churchill and Spaight said. Good luck.
You found someone who claims that one esoteric incident, nobody probably ever heard about, is somehow proof 60 some years later that England started terror bombing Germans first....hardly believable.