Like I said, I haven't seen the specific comments or thread.
There is a fine line between speculating the obvious and being presumptuous, and what's worse, is on the internet everyone has to be right, and there's no room for anyone else to be right if their view differs even slightly.
IRL there's a time and place for comments like that, and it's a feel thing. On the web, the sense of time and place goes out the window, and because it's feel thing, people are naturally going to have disagreements on when is too soon to state blunt thoughts.
What sucks is online, even the smart ones are as cocksure as the dumbest ones, because 1) anonymity and 2) they have a whole world of information that they can just google to back up their stance, making them more entrenched. And when people think they're as right as right can be, there's no room for "Hey, let's be appropriate here".
Between tide-pods, r/politics, r/The_Donald, and 4chan, I'd rather the internet just go away.