I agree, and I have a number of memories of batches and projects failing because one piece of software locked something required by another.
Excel was a particular issue, but then often the Excel objects were not created for the SAS process but used as an input. It would be unkind to blame Excel for blocking something it wasn't designed to do.
Import will allow the data to be taken (and the import to be bypassed in some project updates if required), whereas Open will require that a file lock can be obtained every time the project is opened.
Kind regards
David