Yes. I believe that it's better to be verbose rather than obscure. I'm of a belief that it's easier for someone to understand what was the original intention of the "pass-arguments-to-command" rather than "arguments" keyword. The verbosity shouldn't affect performance significantly.

They are a little verbose, though it is likely not to cause problems here. I suppose that it may slow things down a very tiny bit. The author could possibly have been trying to future-proof it with a bit more verbosity in the face of allowing for other keys (execute-mode, execute-permissions) etc.