This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
Very interesting, thank you for the explanation.
Edit: is that just for defederation or also when I block an instance on my account?
That’s only for defederating. Blocking is local, and basically just hides the instance from your feed.