@NatureMC @stefano open an incognito window or a different browser and you can easily read that person's posts. With Mastodon it's even easier: just use a different instance that you aren't logged in to – no incognito window required.
"Logged out of the Fediverse, you can see more than my public posts?" – ah, I only had public posts in mind with what I wrote. I have never used non-public posts with Mastodon, so I have no idea; if that's what you were referring to beg pardon.