What a load of nonsense!
The procedures to ensure these mistakes do not happen have been in place for the last 40 yrs!
Apply standard operating procedures, as per your company's manual, and standard ops will occur.
The crew stuffed up, that's obvious, let's find out why!
The A345 came into service in 2002 so where did the other 33 years of procedures come from ? I am sure they were not calculating weights etc with laptops and typing them into the FMC 40 years ago especially with the A345 in mind.
These pre-emptive 33 years took into account human error I guess - your assertion is that the crew did not follow SOP's - people do however make mistakes, that you will never eliminate - but you can at least try to spot them.