[mothered]

These methods hard if Amazon deliver with own courier?

No difference If It's their own drivers (Amazon Flex) or their carrier partners - FedEx, DHL, UPS etc.

The method Is executed In the same way, so too Is the way the claim Is assessed.

They do own delivey themselves most time now and take picture

It depends on who the carrier Is.

Also all package have weight on them

All packages are weighed at the carrier's depot, for both record keeping and cost of freight.

Do this make SE harder like EB, DNA, etc.?

If you're referring to the weight, It's Irrelevant to the DNA method.

You're purely claiming the package didn't arrive, Irrespective of how heavy It Is.