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"I agree concentration camp doesn't mean Nazi death camp but she shouldn't have diluted the language of the holocaust " Makes no sense.
It makes perfect sense. People (rightly or wrongly) equate ‘concentration camp’ with the holocaust death camps - therefore damage done. That’s what matters, not the dictionary definition.
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If you meant to say "The wording was unwise because a lot of people conflate those things and some of them will respond in a purely reactionary way rather than think about it.", that's worth debate although I'm not sure I agree. But you said "diluting the language of the holocaust" which puts you on the side of the petty, Anglo-centric nationalists who are the ones doing the diluting.
"I agree concentration camp doesn't mean Nazi death camp but she shouldn't have diluted the language of the holocaust " Makes no sense.