GlassJaw
Hero
That point first started getting made 15+ years ago, in 3e forums. The thing that's funny is MMOs came up with "aggro," because they were trying to implement the traditional D&D Fighter role, but didn't have unwritten DMing rules that most monsters just attacked the fighter, most of the time, especially if he made any pretense towards getting in the way.
I guess we could just figure 5e has a DM, and trust him not to have monsters walk by you just because they can. Or, maybe that was some age of innocence, and we can't go home again?
Not sure if you are ranting against something or something in my post...? Because I 100% agree with you. I'm not advocating 5E needs a "grab aggro" mechanic.