Wrong?
It takes a fraction of the time and there's no need to leave your drone powered up while you wait for the files to trickle down your cable.
Popping the SD card, putting it in the slot of the laptop, copying, formatting and putting the card back in the drone takes 1-2 minutes tops.
Quick and simple.
You seemed so confident I put this to a test.
My equipment: Dell Inspiron 5558 Dual Core I7 processor running @ 2.4 Ghz, with a 2 TB SSD drive and 16 GB ram.
The 64 GB SD card that came with my Mavic 1 Fly More package.
I loaded the SD card with 1,263 files totaling 20.8 GB. The files were a mixture of video MP4 and jpegs.
Test 1: Time to copy the contents of the SD card to the computer using the SD slot in my computer. Time: 9:57.
Test 2: Time to copy the contents of the SD card to the computer using a USB cable connected to the drone. Time: 10:28
Time to remove the SD card from the drone, place it in the converter and connect to the computer, then do everything in reverse: 1:04
Time to connect and disconnect the drone from the cable, including power up & down: 0:42 sec.
Total time USB: 11:10
Total time SD: 11:01
This is not adding in the time to format the card, which I do not do with the USB option because I do it as a move. Taking this into account, the times are essentially identical
My advantages: (1) I still have my contact information on the SD card if it is ever needed. (2) There is no worry about going out into the field without the SD card installed.