Semantically, it's something of a cross between the popular packages "evil mode" and "god mode". I do understand that it's pretty strongly 'inside baseball'[1], but it's also (IMHO) the sort of idiosyncratic package that one would usually not expect new-to-emacs users to pick up right out of the gate.

Hope that helps,

~Chad

[1] https://en.wikipedia.org/wiki/Inside_baseball_(metaphor)