I
prefer to format my SD cards with FAT32 on the computer I need to read the cards with. This guarantees I can read them to copy, if the drone can write to them. If the drone can't write to FAT32 formatted SDs, I have bigger problems. This also proves interoperability between my computer and drone. So far this hasn't been a problem in 2.5yrs and two computers. It's also more
convenient for my workflow. I prefer being able to see the video I'm deleting, right before I delete it off the card.
General recommendations from DJI are just that, general by nature, and good to advise, given all the format possibilities that consumers can muster, such as formatting in a TV

or playstation. I put this in the same category as DJI's "recommendation" to not charge the RC and flight battery at the same time, that advice being hidden in the FAQs page, and not stated in the manual, so it's not important IMO, but that's just me. I know it works fine. It's also recommended I fly VLOS.