Console Snippets to manipulate YouTube Music playlists in bulk

Snippets.js

// First, load jQuery:

var jq = document.createElement('script');
jq.src = "https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(jq);

////////////////////////////////////////////////////////////////////////////
// Remove all disliked songs:
 for (const el of $('ytmusic-responsive-list-item-renderer:has([like-status="DISLIKE"])').get()) {
  el.dispatchEvent(new MouseEvent('contextmenu'));
  await new Promise(r => setTimeout(r, 100));
  $('ytmusic-menu-service-item-renderer:contains("Remove from playlist")')[0].dispatchEvent(new MouseEvent('click'));
}

////////////////////////////////////////////////////////////////////////////
// Remove all songs after $0:

const start = $0;
while(start.nextElementSibling) {
  $0.nextElementSibling.dispatchEvent(new MouseEvent('contextmenu'));
  await new Promise(r => setTimeout(r, 100));
  $('ytmusic-menu-service-item-renderer:contains("Remove from playlist")')[0].dispatchEvent(new MouseEvent('click'));
}