Earlier quoted context omitted.
Same here. I get that they're having trouble changing the FS on a MicroSD/writing an image on it. But what is XCalibur?
Maybe it's all some joke about how this one MicroSD card is just like excalibur? In that you can't get useful data out...
the joke became that as we explained the futility of formatting the SD card to any new person, they'd instantly think "oh no, they probably haven't tried x, I bet I could do it" and try it and fail in a similar fashion to how everyone thought pulling excalibur from stone would be an easy feat, but trying it, they failed