You are creating a circle of confusion.
All of your statements are are absolutely correct.
My post "You get more depth of field with a wider focal length at the same aperature and distance to subject." Absolutely correct. It is covered in the...
As with all things legal, the answer is "It's complicated."
First, even some Mini 4 Pros went over the 249g line. The reality is that there are no TC police out there weighing each drone to ensure compliance. For one, that's actually the drone...
The Mavic 4 Pro's should be 1000m in the U.S., but I think there is some bug in the current FW that is inconsistently still limiting it to 500m, as is mine, because of GEO Mexico bleeding into the U.S. when still within 50km of an airport in MX...