Man, the internet becomes so much easier to navigate once you realize that others aren't always commenting to be in dialogue.

I know this irks some! "Why is X commenting just to repeat what I said? Does X think I don't know that?"

But for many, a post is an invitation to free associate. An excuse to share an anecdote, affirm comprehension by echoing the lesson, or go off on a tangent.

Either way, it's not your problem unless you make it personal.

Mute/block/nod/move on.
And keep your bliss.