For the user, downloading "mas-1.3" implies access to a more refined and stable experience than earlier iterations. It is a signal of reliability.
Always ensure you are downloading from official sources like the massgravel GitHub repository to avoid security risks associated with unofficial mirrors. after running the script? mas-1.3-aio-crc32-6f6382d8
This is why a filename like this is useful for verification, not identification of content. For the user, downloading "mas-1