Maybe its not needed. Dyson swarm is like warming near campfire. Maybe there is something more convenient than just burning hydrogen. And when you can encase a whole star, shouldn't be too difficult to make kugelblitz or other exotic constructions.
In addition i wouldn't be surprised that something like stars themself can gain conscience within their complex fields, flows and interractions but we're too small for them to hear.
I wouldnt rely too much on biblical teaching for otherwordly explanations. It tends to very wrongly and childishly explain even simple things that we now know for sure are different. Even if ot has some merit its written mostly to benefit people of its time without over-complicating things.
Apparently practical enough to fool experienced pilots they're against something real and super capable, while your old MIG-21 goes to take out the carrier.
We got thousands of spiecies on earth but we've yet to have meaningful communication with any of them. Maybe there is something special about certain level of cognition that "clicks in place" to override instincts and favor knowledge?
Maybe the technology is so complex it doesn't make them much more supperior as spiecies. Just gives a rare, expensive oportunity to e.g. send a probe or just signal a.
Similarly to how LHC can produce some anti-matter doesn't mean we have anti-matter drives and kettles at home. Or if chimp grabs your hand in woods your physics knowledge or texhnologically marvelous smartphone ain't gonna do much.