It seems relevant here that a stereotype usually involves a bundle of traits(usually some vigorously negative ones; often some positive, neutral, or simply aesthetic/flavor stuff as well); so while it would be a pretty tall order to come up with a vice so genuinely novel that it hasn’t been incorporated into somebody’s stereotype by now; you aren’t really tapping the stereotype unless you start veering toward suspiciously similar trait bundles.
It’s the difference between a (potentially unimaginative and lazy; but not obviously stereotype-affirming) Always Chaotic Evil or Planet of Hats; and a full-on Space Jew.
If a given fantasy race/sci-fi species is particularly amenable to drifting into space jew territory; that isn’t a good sign, since it suggests that the characterization is flat, all the members of the race/species are lazily similar for no terribly good reason; and the in-world stereotype is so boring that people import the closest real-world one just to add color and texture; but writing something so uninteresting that people rush to replace it with a nice, organic, stereotype is a different sort of authorial deficiency than importing one yourself.
