It appears that all NSFW content is blurred. I looked in the user settings, and I don't appear to have any option to disable it. All that I see is the following:
Edit: I just found out that !lemmy_support@lemmy.ml exists. I assume that these sorts of posts are supposed to go there. I will crosspost this to that community.
You can use an app like Jerboa which supports unblurring.