^But it's just an assumption that all energy beings have magic telekinetic powers, simply because we've seen other energy beings that have them. But does that follow? Surely incorporeal life forms are as diverse as corporeal ones, and don't all have exactly the same abilities.
Consider the "Wisps" in Enterprise: "The Crossing." They were incorporeal, but they needed a starship to travel the galaxy. Similarly, the Sha Ka Ree "God" seemed to be some kind of energy being, but it also needed a starship. Also, the subspace beings from TNG: "Interface" were trapped inside a gas giant and needed a starship to free them.
Then there are various incorporeal entities that seem to need to possess corporeal hosts or objects in order to affect things physically, like Redjac, the "Beyond the Farthest Star" entity, or the cloud entities from "Lonely Among Us." And we've seen entities like the Koinonians from "The Bonding" and Isabella from "Imaginary Friend," beings that could simulate human form but couldn't just transform reality with the snap of their fingers.
So we have seen explicitly that incorporeal species come in many different categories, some far more limited in their powers than others, and that some of them are dependent on technology to some degree. So there's no basis for assuming that Trelane's species isn't dependent on technology as adults.
Consider the "Wisps" in Enterprise: "The Crossing." They were incorporeal, but they needed a starship to travel the galaxy. Similarly, the Sha Ka Ree "God" seemed to be some kind of energy being, but it also needed a starship. Also, the subspace beings from TNG: "Interface" were trapped inside a gas giant and needed a starship to free them.
Then there are various incorporeal entities that seem to need to possess corporeal hosts or objects in order to affect things physically, like Redjac, the "Beyond the Farthest Star" entity, or the cloud entities from "Lonely Among Us." And we've seen entities like the Koinonians from "The Bonding" and Isabella from "Imaginary Friend," beings that could simulate human form but couldn't just transform reality with the snap of their fingers.
So we have seen explicitly that incorporeal species come in many different categories, some far more limited in their powers than others, and that some of them are dependent on technology to some degree. So there's no basis for assuming that Trelane's species isn't dependent on technology as adults.