As other people have mentioned but I think not quite nailed perfectly, restrictions on behavior aren't quite the right solution to the problems that plague social media. Some people think that the right move is to eliminate engagement optimization algorithms, and I think that's not quite exactly right either. IMO the right solution is personal executive autonomy over content presentation and algorithmic optimization.…
When they introduced the feed, Facebook gradually became worse at all of those things. Facebook became less about being a useful tool and instead became a media sharing instrument for serving advertisements. Your entire post is about that aspect of it though, and really it's the problem with all social media. The feed design is fundamentally incompatable with providing the utility that was initially offered by Facebook. The feed is purely a tool for distribution and consumption, not forging connections or otherwise improving the lives of users.