Like the mainstream political arena, the most accurate explanations don't stick, but the most appealing ones do. The parentheses of Lisp's "function within the tuple" application disappear in the same way that other languages' function-before-the-tuple parenthesis disappear - it's not particularly noteworthy. "Don't even see the parenthesis" is talking past the real objection, which is that the depth of parenthesis in every other language does not matter - ie (expr) is equivalent to ((expr)). Whereas in Lisp they also mean another level of application.
I think an interesting synthesis is Haskell, where function calls are simply juxtaposition. Parenthesis are just grouping like most languages, but it ends up feeling quite Lispy.
I think an interesting synthesis is Haskell, where function calls are simply juxtaposition. Parenthesis are just grouping like most languages, but it ends up feeling quite Lispy.