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That’s why I don’t even bother with the file name for photos.

1. Sync all equipments to the same clock.

2. Sort by Date Taken, if unavailable, sort by Date Created.

Yes, sounds to me like the user really wanted to sort by time created. And got used to sorting alphabetically as a poor proxy for that.

When copying files from a device and then between systems, too often the dates get lost (shouldn't, but still...)

That only happens for the datetime metadata of the files (modified, created, access etc). The EXIF metadata will still remain the same.