Nothing makes a commentard like the inability to think critically
There's a reason the modern world shifted from an epistemology founded on ethos to one founded on logos. In fact, that's one of the defining features of modernity; it's not sufficient (there are other major epistemic changes, such as the "sense of the new'), but it is necessary. Without it we wouldn't have had the technological nous to modernize, for one thing.
If you can't learn to distinguish between the message and the author, you're pretty much stuck in pre-modern thinking. Which isn't quite the same as being an idiot, but it has similar effects.