'but they didn't all die there, did they?', carries a risk of implying it 'wasn't as bad as all that'.
That certainly wasn't my intention. But lazily lumping them all in the category of "died in concentration camps" is:
(i) untrue,
(ii) offensive to the memory of those who died in other ways and who deserve to have the facts of their deaths accurately known,
(iii) doesn't broaden people's knowledge of the manner of deaths and spread of locations across Europe, and
(iv) opens the door to scepticism about the "real" facts when people realise the statement isn't true, possibly leading to wondering if Holocaust deniers or revisionists have got a point.
One thing I've learned over the years is that the Holocaust isn't one story of how 6 million people died, it's 6 million stories of how an individual died. They were individual people with individual lives and individual deaths. It's a dishonour to not accurately acknowledge that. And that goes for all the other victims too, whether Romani, gay, political prisoners, handicapped, mentally ill, Jehovah's Witnesses etc.