> Brackets and commas in particular require you to navigate left/right a lot to add them in the right place while iterating and give confusing errors when you get them wrong.

In other languages, modern IDEs take care of that. For an invocation like `addNumbers(1, 2)`, you would perform code completion after typing “aN”, and the IDE would already fill in matching function arguments from the current scope. The selection (cursor) would be highlighting the first argument, so you can readily replace it. Pressing Tab would move to the next argument. Pressing Enter (or similar) would accept the call expression in the current state and move the cursor behind it. So you only type the actual arguments (if necessary) and otherwise just hit combinations of Tab and Enter, or Ctrl+Space for code completion. You generally don’t type the parentheses or commas yourself.

That being said, I’m in favor of languages with not too much punctuation. But there’s a balance, and too little punctuation can also hurt readability.