You mean you see posts by other people than those you follow? On Twitter I just follow say 100 people and my client shows me their posts in chronological order

You mean you see posts by other people than those you follow? On Twitter I just follow say 100 people and my client shows me their posts in chronological order and nothing else, with no ads. If a feed tried to algorithmically insert a post I’d stop using that service in a hurry. What I have seen from mastodon is that there is such a feed available so by the look of it, so far so good.