Box Drive should copy by default on macOS
As described at https://support.box.com/hc/en-us/articles/4407737091219-Using-Box-Drive-on-macOS-File-Provider-Extension-FPE-mode
a change when moving to newer Box Drive, or upgrading to Monterey, results in the serious change of drag and drop is now a move instead of a copy.
If a user ever accidentally drags a file to their local drive, it takes it out of Box, and trashes the original, it eliminates the previous object ID for the file, it trashes all prior versions of the file.
This simple mistake can break every link that a company may have for a particular object in documents, bookmarks, etc. Or, if the user doesn't realize they'd moved instead of copied, it can result in data loss along with the inaccessibility of the object for other Box users in the org. With the version history loss, a great amount of data loss can occur, along with lost auditing ability for tracking an undesirable/unapproved change to a file.

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Anonymous commented
Agreed. I'm still in disbelief that this change has happened. Box engineers - it wasn't broken, so why did you fix it??? The principle of dragging to/from external drives has been "copy" since the beginning. Who in the world thinks "let's just change this now just because". I've lost some files already and my company spends some good money with Box, so not having an option to revert back is frustrating. I'm thankful that car companies don't think like this - "hey we decided to make the gas pedal stop the car now".