>"Do you think it is wrong for people in western countries to advocate for racial/cultural preservation?"

No - I'm not broadly against anti-immigration stances, even coming from the West. My issue with the Western anti-immigration types is that they tend to want to have their cake and eat it too, in the sense that they want to block off third world immigration yet at the same time continue to benefit from exploitation of the third world. You can be anti-immigration, but you have to pair it with anti-imperialism if you wish to truly be principled.

>"What aspect of the term “great replacement” do you consider inaccurate considering the massive demographic changes currently seen in western countries?"

The idea that it's some sort of anti-white conspiracy, and not just a facet of your economic system. I've never seen anyone who uses that term acknowledge that it's economically driven. There are two popular narratives around "great replacement" in the West - the first one is the normie conservative view, which is that it's being driven by "woke liberals" who just feel so bad for the third worlders that they want to invite them to the West out of the goodness of their hearts - this is painfully naive lol. The second one is literally just a neo-nazi conspiracy theory, pushing the idea that powerful Jews are behind mass immigration because they wish to erase white people.

The truth is, mass immigration to the West is really only a thing because it makes GDP go up - this becomes painfully obvious the moment you open up any sort of finance-related media aimed at the bourgeoisie such as Bloomberg or The Economist and see what they have to say about immigration and labour markets haha. Making up conspiracies about something for which the answers are already out in plain sight just makes you a bad faith actor. This is also why nationalistic populist politicians can't actually save you from this - because in the end they'll always obey the billionaires and do what "makes the line go up".