I have a Jet 6" w/48" table(s) that I rarely use. Only use in the past ten years has been to flatten the face of resawn logs from the band saw so I can begin to quarter them (on the band saw).
Used it a bit at first for edging rough cut lumber, but found it easier to just run it on the table saw. If a board is longer or heavier that is easy to pick up off center, running on the jointer for a square edge the full length is near impossible.
I can see how a bench top would be better for smaller workings, but a TS can square those even easier.
For getting a flat face, I just run a board on the DS on a sled with shims to carry it thorough (36 grit). Same concept for a planer. Advantage with the DS or planer is more than double the capacity of the jointer I have.