Fleets were a feature that a hedge fund specifically asked twitter to do. It was basically instagram stories, but as tweets, they'd disappear after 24 hours. Or like Snapchat. Does anyone use Snapchat still?
Before the joke was 'timeline goes sideways' but the timeline literally went sideways as it was shoehorned at the top. Twitter spaces also took the same spot. android had many visual bugs with displaying..."Fleets"
and then one day they were gone