You cannot add or edit these links, even if you're the person commenting. Initially, YouTube said that creators would be able to remove links on their video comments if they wished, but right now, the option to do so is not obvious in YouTube Studio.

YouTube said in the announcement that it is aiming to “reduce friction” when users attempt to learn more about a subject. As a commenter, you have no power to pick which word is hyperlinked or remove a hyperlink. However, the company said creators can remove those hyperlinks from their video’s comments if they want.

YouTube's new hyperlinked comments add functionality by offering users more context on specific topics. The feature has begun rolling out on Android and iOS, but appears to lack consistency. Hyperlinked keywords will appear in blue with a magnifying glass icon next to them.

YouTube hyperlinked comments are now starting to appear more widely in video comment sections to aid quick, specific topic searches.