I thought the LII's comment was both creative and funny. The messes that Ni-doms can make (me, included) can be truly staggering, because they (we) don't actually "see" the mess. The focus is on the ethereal, not on what's in front of them.
As for LII's being mean, I've seen them trying to be mean but they seem to fail dismally at that. From my standpoint, they just end up being funny. Maybe it's an Extinguishment thing; we can't really affect each another in any significant way.