Why I don't use Kliplok roofing

In Australia, we have low pitched roofs. Our standard solution for flat roofs is the 'Kliplok' profile metal roof sheet. The reason we call it Kliplok - is that Lysaght pioneered this roof profile for use on flat roofs. It started off with the 'Kliplok 406'. This was a 406mm wide roof sheet with two drainage pans.
Other roofing manufacturers followed suit and produced 'copycat' roof sheets (with their own names). But by this time, all Australians got to know ALL these types of roof sheet profiles as plain KLIPLOK...
When Lysaght introduced their new 700mm wide 'Kliplok 700' roofing profile to replace the pioneering Kliplok 406, the other manufacturers followed suit.
Now, we have standardised the use of 700mm wide KLIPLOK styled roof sheets for all our flat roofs.
But the Lysaght KLIPLOK 700 front runner has a major design fault.
Find out what this is on this video and what is a better alternative..