deno validator: --filenameMode still wants dataset path and then seems to do more than just paths validation

[yarikoptic]

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(deno) yoh@typhon:/mnt/DATA/data/yoh/1076_spacetop$ git ls-tree -r --name-only HEAD | /home/yoh/proj/bids/bids-validator/bids-validator/./bids-validator-deno --filenameMode
A new release of Deno is available: 1.44.3 → 1.44.4 Run `deno upgrade` to install it.

Usage:   bids-validator <dataset_directory>
Version: v1.14.7-dev.0-68-g53fdba69

Description:

  This tool checks if a dataset in a given directory is compatible with the Brain Imaging Data Structure specification. To learn more about
  Brain Imaging Data Structure visit http://bids.neuroimaging.io

Options:

  -h, --help                    - Show this help.
  -V, --version                 - Show the version number for this program.
  --json                        - Output machine readable JSON
  -s, --schema          <type>  - Specify a schema version to use for validation                          (Default: "latest")
  -v, --verbose                 - Log more extensive information about issues
  --ignoreNiftiHeaders          - Disregard NIfTI header content during validation
  --debug               <type>  - Enable debug output                                                     (Default: "ERROR", Values: "NOTSET", "DEBUG", "INFO",
                                                                                                          "WARN", "ERROR", "CRITICAL")
  --filenameMode                - Enable filename checks for newline separated filenames read from stdin

  error: Missing argument(s): dataset_directory

and from the --filenameMode - Enable filename checks for newline separated filenames read from stdin it sounds like it should not require dataset path. MAy be I also misunderstood the purpose -- is this option to restrict the set of files to validate for? or operate only on file names? (@effigies mentioned that mode)