Alright, I scrolled through all 16 pages of the singularity of stupidity that was that thread. I don't see anything in there by taligent that stands out. About the worst he did was let himself get dragged into a personal fight in the first few pages. (I wonder now which one of the users you were in that forum thread. sednet?)
You linked to the email exchange between Linode support and one of the affected customers. You know that Linode already had an idea that they had a problem before the rest of their customers found it. Do you think it would have been so unreasonable for Linode to at least put up a message on status.linode.com, "We are investigating an incident of unauthorized access to one of our customer Linodes, we will update this as we investigate it"?
And I don't read that implication from taligent's comment here. I think it's obvious that he's saying that they didn't bother to let their customers know when the incident occurred.
Basically: he thinks they didn't handle the disclosure on that matter in a way befitting its seriousness, and he thinks that they've done nothing to show that they'll handle it differently in the future. I agree on both counts. As he said in the forum thread, what makes this so frustrating is that Linode has been so spectacular in every other regard.
He's right also to point to the CloudFlare post-mortem as an example of Doing It Right. Surely you see the stark difference between CloudFlare's handling of their incident and Linode's? We still don't know the exact nature of the compromise (former employee? Did Linode have an externally-accessible customer service interface? What happened), nor do we have any idea what they did about it, other than that they say they "will be reviewing our policies and procedures to prevent this from ever recurring" -- an extremely wormy statement that will still be true even if they choose to change nothing at all.
I don't like to see HN threads turn in to a whirlwind of pointless personal attacks. Let's just discuss the facts, OK?