You get "brutalized" if you pull in stupid ways due to tuning being what it was/is, I don't consider new players dying to Elwynn murlocs today to be a testament to the "brutality" of those mobs. Question: At which point does it stop coming down to "challenging gameplay" and start being a case of a terrible player when they keep dying to world mob AI...?
My lower geared alts cannot one or 2-shot every mob in Legion. They're able to handle the Broken Isles mobs (outside of Suramar) better now, but no, I can't take them in and roflstomp in Argus, especially not rares and elite areas. Hell, my most geared characters will get roflstomped by elite caster mobs and rares on Argus if I'm not careful with pulls. Here's the thing though: My death happens ONCE, after that I've learnt my lesson.