Rather than involving a 3rd party in our disagreement, let's just stick to the facts. Well, to the facts and to your confident legal spin on them, that is.
We will both agree, I think, that the central fact here is the wholly unexceptionable CAA statement which you provide a link for in your last post and which I, from that link, quote in full here:
Commenting on the delays and cancellations affecting British Airways passengers, Matt Buffey, Head of Consumer Protection at the Civil Aviation Authority, said:
"Passengers affected by the disruption to British Airways' flights are protected under EU law. The welfare of passengers must be the priority for any airline experiencing disruption and we fully expect all UK airlines to meet their obligations.
Passengers who are currently caught up in this disruption should be informed of their legal rights by British Airways, but they can find out the full details of their rights during delays and cancellations by visiting the CAA website."
Where exactly in the above are the words which justify the exceedingly presumptuous assertion in your first post on this aspect of the commercial catastrophe under consideration to the effect that:
"The CAA has clearly decided that ba's passenger delays were not caused by 'extraordinary circumstances'..."