hidden user comments on instagram.com for UserScript

ig-denoiser.user.js

// ==UserScript==
// @name        IG denoiser
// @namespace   https://noromanba.github.com
// @description hidden user comments on instagram.com for UserScript
// @include     https://www.instagram.com/*
// @grant       none
// @noframes
// @run-at      document-start
// @version     2019.5.28.1
// @homepage    https://gist.github.com/noromanba/1f369b316c1b43bdf0e337c6c5af1c80
// @downloadURL https://gist.github.com/noromanba/1f369b316c1b43bdf0e337c6c5af1c80/raw/ig-denoiser.user.js
// @license     MIT License https://nrm.mit-license.org/2018
// @author      noromanba   https://noromanba.github.com
// @icon        https://upload.wikimedia.org/wikipedia/commons/thumb/4/45/Pictograms-nps-water-fish_hatchery-2.svg/500px-Pictograms-nps-water-fish_hatchery-2.svg.png
// ==/UserScript==

// Icon (PD by NPS Graphics, converted by User:ZyMOS)
// https://commons.wikimedia.org/wiki/File%3APictograms-nps-water-fish_hatchery-2.svg

// Devel
// https://gist.github.com/noromanba/1f369b316c1b43bdf0e337c6c5af1c80

// Bookmarklet
// http://let.hatelabo.jp/noromanba/let/hLHU7oetyNxA

/* filter; uBO et al.
www.instagram.com##article ul ul:not(:first-child)
! mobile
www.instagram.com##article ul li[role="menuitem"]:not(:first-child)
*/

/* selector
article ul ul:not(:first-child)
article ul li[role="menuitem"]:not(:first-child)
*/

// e.g.
// https://www.instagram.com/instagram/
//  https://www.instagram.com/p/Bi0bUMBDaZZ/?taken-by=instagram
// https://www.instagram.com/tofubeats/
//  https://www.instagram.com/p/BiTlSowHP2x/?taken-by=tofubeats
(() => {
    'use strict';

    if (!location.hostname.endsWith('.instagram.com')) {
        return;
    }

    const wall = document.head || document.body || document.documentElement;

    wall.append(Object.assign(document.createElement('style'), {
        charset: 'utf-8',
        textContent: `
            article ul ul:not(:first-child),
            /* mobile */
            article ul li[role="menuitem"]:not(:first-child)
                {
                    display: none;
                }
        `,
    }));
})();