Relevant xkcd: https://xkcd.com/2169/

Now when you defederate, this results in content to be no longer shared. It didn’t reverse any previous sharing or posts, it just stops the information from flowing with the selected instance. This only impacts the site’s that are called out.

I thought I’d heard that

Remember when ads were short and easy to skip? They’re just getting more annoying now.

I could bear them back then, but now I can tell immediately if I accidentally use the mobile app on my phone vs my phone’s web browser.