@georgieboygorgeous georgeous You can match the target of a link in CSS¹, so you could in theory do this with a CSS-modification extension like Stylus², although it's on you to come up with how to mark the link. (I think CSS can add text to the page these days, but I haven't looked at that. But if you can, there are lots of options. Giant thumbs-down emoji, throwing up person emoji, pile of poop emoji, ...)

¹ developer.mozilla.org/en-US/do
² addons.mozilla.org/en-US/firef

0

If you have a fediverse account, you can quote this note from your own instance. Search https://mastodon.social/users/cks/statuses/116126296673220100 on your instance and quote it. (Note that quoting is not supported in Mastodon.)