Моя версия~

// ==UserScript==
// @name     DRACH_HIDER
// @version  1.Rika1
// @match https://2ch.hk/*
// @match http://2ch.hk/*
// @require  https://code.jquery.com/jquery-3.3.1.slim.min.js
// ==/UserScript==

//!Posters you want to hide
let ludiHoroshie = ['!!sW.cQVB3Lk'];

// Hide the poster's posts and remember their ids
let posters = document.getElementsByClassName('post-wrapper');
let tripPosters = document.getElementsByClassName('postertrip');
let godnota = [];

for (let vsevishnii of tripPosters) {
  if (ludiHoroshie.includes(vsevishnii.textContent)) {
    godnota.push($(vsevishnii).closest('.post.reply').data('num'));

    let post = vsevishnii.closest('.post-wrapper');
    if (post !== null) {
      post.style.display = 'none';
    }

    if (vsevishnii.closest('.oppost-wrapper') !== null) {
      vsevishnii.closest('.thread').style.display = 'none';
    }
  }
}

// Hide links to the poster's posts inside other posts bodies
for (let voproshayushii of posters) {
  let molbi = $(voproshayushii).find('.post-message').children('.post-reply-link');
  for (let molba of molbi) {
    if (godnota.includes($(molba).data('num'))) {
      $(molba).hide();
    }
  }
}

// !Copypasted sleep function (Required because for some reason replies don't load before this script is executed)
function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

// Find posts the poster replied to and hide links to his/her replies in "Ответы:" section
(async function() {
  console.log('Taking a break...');
  await sleep(2000);
  console.log('Two second later');

  for (let zabludshii of posters) {
    let refmap = $(zabludshii).find('.ABU-refmap');
    let links_total = 0, links_hidden = 0;

    for (let reply of refmap.find('.post-reply-link')) {
      links_total += 1;

      if (godnota.includes($(reply).data('num'))) {
        reply.style.display = 'none';
        links_hidden += 1;
      }
    }

    // hide the whole "Ответы:" section if it became empty
    if (links_hidden == links_total) {
      refmap.hide();
    }
  }
})();