I think datejusts account for 90% of any jubilees on watches i encounter in the wild - the only other i can think of having seen is an SKX.

So in the sense of "how often do brands produce a watch with one" yes they are dated. I think also the intricacy and ornateness of the 5-piece pattern makes it stand out on the wrist way more than an oyster which is THE "bracelet" people think of when asked to imagine one.

My other wild guess would be that they simply cost more to produce? Oysters have one solid piece per link compared to a jubilee with 2-3 (depending on how it's made).

Not like all of this matters - you like the jubilee so wear it 😀 i still put them on my SKX and on some dress watches