I disagree with pretty much everything you write here, but especially this:

First of all, you have exact same amount of parens as you would in a mainstream language like Java, C, or Js.

My Perl example uses “mainstream language” syntax. Apparently that doesn’t count because it’s Perl (scary! mental overhead! write only!), so here’s exactly the same thing in JavaScript:

function hypot(x, y) {    return Math.sqrt(x ** 2 + y ** 2);}

… or

const hypot = function (x, y) {    return Math.sqrt(x ** 2 + y ** 2);};

… or

const hypot = (x, y) => Math.sqrt(x ** 2 + y ** 2);

Note how none of these involve four layers of nested parentheses.