That's completely irrelevant ... go further down in the article and read the section headed:
Table of sensor formats and sizes
That explains where the size names come from and that they have no relation to the physical size of the sensors.
The current drones work just fine with Sandisk cards ... as long as they are fast enough.
I had cards that worked with earlier models fail to work with the newer drones.
But they work perfectly with Sandisk Extreme and Extreme Plus.
Are the cards...
Yes .. the file size will be similar.
No .. sensor size names have nothing to do with the physical size of the sensor.
See here for an explanation: Image sensor format - Wikipedia
The explanation is under the Table of sensor formats and sizes...
I would think that using RTH would be about as safe as flying for yourself.
I don't use RTH myself, but can't see that there's anything questionable about it.
It's a very reliable feature and has saved many drones when the flyer wasn't as...