could be better but such is life, under 10mins of effort to yield extra comfyness

silenceEbot()

var isEbot = (post) => {
 var linkName = post.querySelector('.innerPost .linkName') || false;
 return linkName.innerText === '[m4xr3sdEfault]****,=,e ＼＿ヾ(ᐖ◞ )';
}

var mutePost = (post) => {
  var hide = post.querySelector('.innerPost .hidePost');
  if (hide) hide.click();
}

var silenceEbot = () => Array.from(posts).filter(isEbot).forEach(mutePost);