The concepts would be easier to grok up front if they just used normal function calls instead of "And now for this special syntax that only exists for this particular feature" which just adds more things to remember, instead of just the concepts themselves.
For me, certainly. But it's not a matter of adding parens, it's more removing extra syntax.
So often people coming from one linguistic syntactical style express themselves in that style which makes their code in the new language less understandable or maintainable.