you're talking apples and kumquats. changing the name of the file (metadata in and of itself) does not affect the file at all. changing the contents of the file will have affects on the file. some changes might not negatively affect the file (like adding metadata when none was present) if the format allows for it. you can know the file will no longer be the same by running a hash on it. name changes will not affect the hash.

also, changing the name of a file is not like, uncommon. if it is an image sequence, some people prefer an underscore before the frame number, some prefer a dot, and some even prefer a space. some places have strict file naming policies, and file names will be modified to comply.

anyone depending on crucial information to be preserved in a filename is just a Sisyphean effort of control.