>>31196163I think that due to its weebness it is more "exotic" and feels less like actual incest and more like fantasy manga uwu incest, as I don't have associated these words with my actual family. I also think that they are more associated with pure relationships rather than sexually explicit stuff that you often see in most incest.
Although for me the same thing goes for the english words because I am ESL. A friend of mine recently called me mommy and my heart skipped a beat, although not in a sexual way.