I've definitely absorbed 'either there's a life vest under the seat or the seat cushion is a flotation device' and 'if oxygen masks drop from the ceiling, put y

I've definitely absorbed 'either there's a life vest under the seat or the seat cushion is a flotation device' and 'if oxygen masks drop from the ceiling, put yours on first and then help others' by osmosis over various flights, but I also definitely don't remember 'leave luggage behind' being anywhere near as prominent.