We're not mind readers. If he says it's ok, we think it's ok. If other vendors have fucked up months long patch cycles, that's their deal, not ours.
Now that it's more clear what role disclosure deadlines play in cooperating with security researchers, it probably makes more sense to just cooperate than point fingers.
He said it's ok this time, but won't be so in the future (pretty clear from the future action). So your decision is still subject to the criticism.
They agreed, but now they regret the decision and wouldn't make it again. To prevent themselves from doing so, they will not speak with OpenBSD until later in the process.
What's the word for pressuring a person until they make a decision they immediately regret?