Interesting choice to spend the bulk of the article publicly shifting blame to a vendor by name and speculating on their root cause. Also an interesting choice to publicly call out that you're a whale in the facility and include an electrical diagram clearly marked Confidential by your vendor in the postmortem.
Honestly, this is rather unprofessional. I understand and support explaining what triggered the event and giving a bit of context, but the focus on your postmortem needs to be on your incident, not your vendor's.
Clearly, a lot went wrong and Flexential needs to do their own postmortem, but Cloudflare doesn't need to make guesses and do it for them, much less publicly.
Honestly, this is rather unprofessional. I understand and support explaining what triggered the event and giving a bit of context, but the focus on your postmortem needs to be on your incident, not your vendor's.
Clearly, a lot went wrong and Flexential needs to do their own postmortem, but Cloudflare doesn't need to make guesses and do it for them, much less publicly.