I see 'paleface' more as a response to something morbidly shocking versus ID'ing a group of people. Similar, if the original were 'redface,' it would be being uncontrollably angry.
Wouldn't swapping in white to have whiteskins, fit better?
"red necks" is usually referring to a specific lot of folk, whereas the original context (of what this is poking at) "referred" of an entire group of people, so saying "caucasians" is more 1:1.
Ehhhhhhhh idk if it is a slur so more as it is derogatory. Whether or not that makes it a slur maybe is up to your own interpretation. I've never heard it used outside of referencing the football team, even having grown up around multiple reservations so idk if it's really "in use" the same way 'gypsy' is for example.
I mean, that's quite literally not what I said :/ I don't think anyone really has much business saying those words but what defines derogatory and slur are, as you are showing, highly up to personal interpretation, and two different words to define as such as they can potentially have widely different meanings for the person trying to grasp the topic. I think many people outside of this thread or of an older generation would have a hard, or harder time, parsing why one isn't okay to say "because it's always been that way" or whatever. That line that defines a word is entirely a cultural phenomenon that happens "real time", so maybe instead of saying it's a hot take and assuming everyone has the same cultural understanding and knowledge as you, maybe elaborate to inform others.
Because, from what it seems, there are people in this thread that don't quite "get it".
I don't use either words, especially the latter so shrug, just don't know of a better way to explain it because I think it mainly depends where you've grown up in the US (how you view the words).