Space is hard. Even with the best people and resources there is a high probability of failure. The only way forward is to launch -> fail -> learn -> repeat.
Yes, pith aside, everybody knows that space is hard. The GP commenter is arguing that it's odd to write off BO when they are currently in the process of launch -> fail -> learn -> repeat.
but they aren't in that process, they haven't even started it
They have for their sub-orbital rockets. Everyone's gotta start somewhere, right?