I've reviewed code that bad, and even muttered invectives about stupidity under my breath, but never let my bewilderment turn into a vicious attack. When I encounter code that's as awful as all that, I ask questions. Do you know of (blank) alternative, did you test this code, are you aware of this consequence. Then, I make a pronouncement; this code is not up to standard and I won't accept it unless the above are fixed, or if it's utterly incomprehensible, I'll say that I cannot see a path forward. Bottom line, the code is defective, there's no reason to make it personal.

If Linus was viewed as less than a god, I think more people in our community would recognize this sort of tirade as ad hominem and they would be ridiculed as such.