Delete your YouTube comment history.
Add the Youtube Comment Deleter Chrome extension: https://chromewebstore.google.com/detail/youtube-comment-deleter/lkhceldiinefjkocccdmpgheheeddfmb
Or navigate to https://www.youtube.com/feed/history/comment_history and then paste the entire script from "script.js" in your javascript console.
See CONTRIBUTING.md for todo list.
Update 2.2.1:
Add progress bar and rate-limit handling.