Re: Bah!
Yes, it's true that even the high end lasers have gone all-in-one these days.
Back in the day, the business ones had separate toner, drum and fuser packs. Often the toner came in a tube or long box with a seal and required you to unseal it[1], ram it in a hole, jiggle it vigorously until all the gunk fell out and then withdraw the spent box for disposal.
[1] Carefully, or you could empty it prematurely and end up with sticky stuff sprayed everywhere.