I'm just gonna come out and say it because I think people don't realize and it may be specific to US - if kbeans sticks we will be called "kbeaners" by trolls until the end of time, as it includes a racial slur aimed at hispanic/latino people
Honestly I bet a fair amount of people will even unintentionally use it without realizing. And if we have the ability to choose, I'd rather our nickname not be something that invites people to easily combine it with a slur
/u/gus is right - 'kbeaner' contains a loaded slur: https://en.wikipedia.org/wiki/Beaner one thats been around for a long time. It is not one I was aware of until recently.