Don’t be sorry, get a life and maintain context. The logical extension of your comment is that no person ever shooting any kind of meaningful images should ever use a single card slot camera, that is ridiculous, it has no historical basis, it isn’t true of many other cameras, video and stills that have one card slot (Hasselblad, Arri, etc etc) and was never an issue taken seriously when we shot film. Talking of which, I lost many film images due to faulty processing.
Now having a robust redundancy and backup protocol post capture is something that falls into best practise techniques, insisting dual capture is the only way a pro could work is farcical. To conflate the two is disingenuous at best.