I think Taichi knows that, but Hal still feels responsible for what he did. What Taichi is saying is the whole Parallax thing was a copout, a poor excuse to try to redeem Jordan in the fan’s eyes. Just like DC was saying “Our bad” despite it being a good character angle, and introducing a more interesting and fresh Lantern to us (Kyle Rayner).
From what I figure of the four main Lanterns, they fit along these lines: Kyle Rayner is the dreamer, the emotional member who is more powerful than he believes potentially, his creativity gives him more mastery of his abilities, but his fear of killing others unintentionally holds him back. Stewart is the thinker and soldier, the working man of the Corps. His weaponry is straight forward and blunt, but he is a loyal follower.
Then there is Guy, the ever lovable rebel of the Corps. He is there to defy authority, question things that should normally not be questioned, and get his point across. While outwardly he seems to not give a shit, he truly cares about his fellow Corps members, as has been proven time and again. So where does that leave Jordan? I think Hal is the rock, the stable center of the group, the “Everyman” that most people can relate to. Jordan is decidedly average, but like most people, when push comes to shove he can step up and take the challenge.
Under Johns, I have no problem with Hal. While the copout bothers me slightly, Johns has done well to take an average character and make him interesting to read about. Hal has his flaws, he’s got attitude, but he still has that old school feel to him. Now if Johns was ever to leave GL for whatever reason, that is when I’d start worrying about Hal’s future. Without a decent author behind him, I don’t think Hal could stand all that well. He isn’t unique, due to the vast number of Corps members. His history isn’t as widely as beloved as say Superman or Batman, Hal Jordan isn’t a household name.
So a Hal dominated GL comic can’t really rely upon it’s own merits, it needs that touch from a writer to give it something interesting, a spark of life. Right now I am on the fence with Hal, he neither bothers me or excites me, he’s just there and doing his thing which is fine. One of the reasons I was excited about the new Justice League teaser I saw where Hal laid the law down was this could be a new, very good angle for Hal: The guy who gets the job done, by any means. Taking a page from Green Arrow, this could reinvent Hal. Not greatly change him, but give him a bigger purpose in the world of DC today.
My (Very long) two cents on the matter, reading the Green Lantern comics recently I find them to be some of the best work I’ve read, I like the idea behind it. Plus analyzing stuff can be fun.