It's my opinion that it would be easier to transmit wirelessly, either to PC or tablet.
Less risk too - I have a canon SLR with a compact flash socket. Somehow I bent a pin inside the CF socket. Was able to bend it back with strong tweezers, but it almost bricked the camera. The new canons (e.g. 6D) now have wifi transfer, exactly what I'm hoping for from the drone.
CF cards and microSD cards are entirely different. No pins to bend in a microSD card socket. The connectors slide over each other. As Thomas B stated above, transferring five separate 4GB 4K video files over wifi is time consuming and unreliable. That's why DJI only enables downloading low quality 720p versions wirelessly, if you want them. Wasting three batteries simultaneously (M2, M2 RC, and iPad/iPhone) to do the download is terribly inefficient, especially in the field. The reason the Canon EOS 6D Mark II offers Wifi download is primarily for 26MB
still photos for immediate sharing to FB, to help compete with smartphone cameras. Even those super hi-resolution stills are well less than 1% of the size of a 4GB video file!
However, to
your point, handle the microSD card
very carefully while ejecting it! If it springs away into tall grass while you are still in the field, you'll never find it! I once lost one next to my open car door, and 20 minutes later, thankfully found it inside the car, after first exhausting the search outside the car, before it got completely dark! I now find a safe open place to remove it, or very enclosed space, even going back to the inside of the closed car, for the ultimate in safety, as I can still find it at home later, if I
know it is inside the car.