Is it still possible to get all posts from a profile?

Is it still possible to fetch all posts from a public profile without logging in (i.e., using Profile.from_username() and iterating profile.get_posts() unauthenticated)?

I'm consistently getting 401 errors and just want to know if this still works at all before spending more time debugging. Happy to move to authenticated requests or another approach if unauthenticated access is simply no longer supported. Not looking for a bug fix just clarification.