It would seem that the end user has no idea what “cut” means. I never have to “go back to the original directory to delete the originals”. That is what “cut” is for.

Besides, as other comments pointed out, one can make a multiple selection, and then, in conjunction with “cut”, it will work exactly like the feature described at the end. 🤷‍♂️

AFAIK, Google Maps, Firebase Cloud Messaging, Authentication and (since v5.24.15) Wallet/Payments. Might be more.

No, the original depends on proprietary blobs. And so does molly, unless you use the FOSS version explicitly.