Only if you are running a version that has it, which at the moment means Canary test release.
doesn’t say very much, but you found the relevant GitHub issue and pull request. Check dates.
2.0.9.108 Canary view:
C:\Duplicati\duplicati-2.0.9.108_canary_2024-10-03-win-x64-gui>Duplicati.CommandLine help run-script-with-arguments
--run-script-with-arguments (Boolean): Enable script arguments
This option enables the use of script arguments. If this option is set, the script arguments are treated as commandline strings. Use single or double quotes to separate arguments.
and I think it’s unusual that a boolean comes up like that. You may need to uncheck and check.