It’s a perfectly valid thing to wonder within the context of the thread. Of course everyone’s general historical knowledge should include a good understanding of the Holocaust and I’m also a bit nonplussed at someone having no idea whatsoever about the Nazi connotations of ‘Aryan.’
But it is not a zero sum game and I do think that the level of general ignorance about the realities of the Empire in recent history amongst the British population is pretty desultory. How many know that more than 10 million people were uprooted because of partition? How many know that an estimated 1 million were killed in the sectarian violence which followed? How many Britons know about the 2.1 million people who died in the Bengal Famine, also in the 1940s? If we’re going to wring our hands about general ignorance, that is.
You only have to read this thread to see that many people don’t know that both the term Aryan and the swastika symbol had significance before they were appropriated by the Nazis.