Speaking for myself, the reason I’m not even writing the N word when discussing it isn’t because it’s more severe. The other term is so loaded that, in the early 2000s close to where I lived in the UK, a gang set about the house of a
paediatrician because the mob didn’t know the difference — if the N word is more severe than that, then please let me know so that I can apologise for underestimating its effect.
Rather, the reason I’m avoiding the N word is that it targets an innocent group who are essentially my equals and who are only poor because Western Europe happened to go through the industrial revolution first (someone has to be first) and thus conquered around a third of the planet between them.