Follow along. You said to that poster that others pointed out the same thing to him/her as you did. I told you that no, you were the only one that responded to him/her regarding that. Why is that so difficult for you to comprehend? And then I said you were acting like an ass, which you were, but that is beside the point now.
I was right -- you ARE a woman. Your form of argument is familiar.
Now the problem you're laboring under is believing that "each reply on a thread is particularly disclosed to one person only, and is not a general point made on the topic". So other comments, even if on point, don't exist, except to the particular person addressed by the "reply" function.
Wow. That's ridiculous -- incomprehensible, really. That's bizarre.
And if someone wanted to 'privately' respond to one person (as you construe threads) you'd use mail, not thread posting.