FC plothole? Why didn't the Borg create the vortex in the Delta Q?

Except that in response to Kira's order, Dax did not say, "Inside the Bajoran system with a wormhole here?" She said "Inside a solar system?!?!?" She clearly was implying an issue with warping inside any solar system. She was intentionally being general.

Except that in response to Kira's order, Dax did not say, "Toward the Bajoran sun?!?!!?"

Isn't this conversational tangent specifically about what Dax actually said? Dax clearly had a problem with engaging warp in any solar system, unrelated to their direction or the specific system they were in.