remover.js

// ==UserScript==
// @name         remove container
// @include      http*://b.hatena.ne.jp*
// ==/UserScript==

(function () {
  const configure = {
    'https://anond.hatelabo.jp': true,
    'https://togetter.com': true,
    'https://twitter.com': true,
    'https://kyoko-np.net': true,
    'http://blog.livedoor.jp': {
      users: new Set(['dqnplus', 'itsoku']),
    },
    'https://qiita.com': {
      users: new Set(['poly_soft', 'Yametaro']),
      words: ['ワイ', 'パパ', '消耗', '歳'],
    },
  };
  const list = new Set(Object.keys(configure));
  const reg = /^(https?:\/\/[^/]*)\/?([^/]*)/;

  function isRemovable (a) {
    a.getAttribute('href').match(reg);

    const {
      '$1': domain,
      '$2': user,
    } = RegExp;

    const detail = list.has(domain) && configure[domain];
    const content = a.innerHTML;

    if (detail === false) { return false; }
    if (detail === true) { return true; }
    if (detail.users && detail.users.has(user)) { return true; }
    if (detail.words && detail.words.some(s => content.includes(s))) { return true; }
    return false;
  }

  function removeContainer (now) {
    while ((now = now.parentNode) && now.tagName !== 'LI') {}
    now && now.parentNode && now.parentNode.removeChild(now);
  }

  Array.from(document.querySelectorAll('h3 a'))
    .filter(isRemovable)
    .forEach(removeContainer);
})();