I think the cargo door thing is being a little over blown.
yes, in an ideal world they should all have the bigger door, but it isn’t the end of the world and it does not really, in a practical sense, limit the freight it can carry. It just makes handling more of a pain.
the smaller cargo door is the standard fitting on the 777 and the bigger cargo door is the option. If it was such a huge deal there would be no choice. The decision to go with the standard door was a swift decision that had longer term implications, and was about a million bucks an airframe if I remember correctly.