It seems that this chart assumes:
1. Everyone is a baby that gets their feelings hurt when you imply they might not know something they do in fact know (top right).
2. Everyone loves being alpha nerd and making people feel dumb for not knowing things they know (bottom right)
While both of those are real phenomena, they are pretty dysfunctional. Many people (most people?) enjoy genuine cooperation within a context of mutual trust, learning things from others, and teaching others who want to learn. In that context, checking for knowledge is not a slight, and assuming things "are obvious" and failing to explain them is not a flex.