I think you still have to be logged in to see other posts than just the one being directly linked to. He tried requiring sign in for all access, but that screwed with embedding and google results, so they pared it back to this.

edit: just checked and now you can see more than I was expecting, so idk what’s going on. The fact that you cannot see anything on the feed past 2020 is definitely weird.

edit2: wait, no, there are tweets past 2020. Looks like all the tweets visible have 20K or more likes, so maybe they’re doing something to show the most popular ones only (out of order? wtf?)