Not questioning what I read as your positive response to his post, but I find the semantics interesting. Is he 'honest' because he is willing to admit to regrets based on his personal experience? Because you agree with what he's stating about the elements of hi-fi he's discussing? I guess I'm wondering what might make this any more honest than other such reviews, not to start an argument, but to raise the more general question about how we ever could assess 'honesty' in this type of post. Even if he is speaking his own truth, which I believe he is, how does that relate to the "truth" of the effectiveness of the high-end cables, isolation products, etc., he's discussing? I also think it would be interesting to see/hear what he might have had to say about each of these things at the time he was first compelled to buy them. Presumably he would have been speaking honestly at that time also, though his messages might have been very different.
Again, I'm looking at this in a very general way, not questioning him, and certainly not questioning you. Just thinking about this question of what makes a review[er] honest beyond their willingness to express their true opinions.