Ok, that's cool, then.
Lemme explain why this is important to me. There are a couple of parts to it.
1: The inviolability of the moral neutrality of the universe. A morally intentional universe removes agency from the hands of people and makes them the puppets of cosmic forces. It might be a cool (but completely different) game to play those cosmic forces, but if we're playing people, those cosmic forces are nothing more than an excuse to act with impunity. There is no moral impunity in the Solar Calendar.
2: The universe follows natural principles. If it's not true that EMC^2, the entire rest of the setting falls apart. No transit gates, no GPS, no transistors. We have marked off areas where we don't understand the principles completely, like "dark matter" (matter that doesn't reflect or emit enough radiation for us to perceive) and "dark energy", which I don't understand. But we can point to these areas of mystery because we can calculate the shape of the problem,knowing what we know.
3: Economy is a force of nature in society-scale relations. The market value of something is a ratio of its value to the person who controls it vs. the value to a person who needs it, plus the amount it costs to move, process, or whatever. So if there's some form of energy that no one's ever theoretically described before, it matters because it helps someone feed their children in some way. That way might be powering their labor frames to harvest food, it might be that they use it to power their mobile frames to defend their labor frames to harvest their food to feed their children. It might be that they use it to power the transit gate to send their mobile frames to capture a harvest that they can use their labor frames to plant so they can feed their children. But as soon as someone says, "Here's a fusion battery that, in the end, costs you 10% less", that means 10% less need to go capture other people's harvests, which might mean 15% more energy to power the labor frames, which might mean 20% more calories to feed their children.
Conversely, if this type of energy is actually better, than harnessing it is a matter of technique; otherwise, they couldn't turn it into electricity to power their frames. I bet someone would pay the equivalent of many, many children's meals to learn that technique — maybe even installing those fusion generators at no cost to the colonists — thereby also solving the problem.
If this is a form of energy you're talking about, it's a force of nature no one's ever heard of before. Your guys might be holding onto it because of a religious belief, but that means that they're also using it with a mistaken belief about its nature. That kind of thing has historically gone very poorly. See and . This is an ongoing matter in the US with "Creation Sciences" and climate change denial. It's the bug in the human nervous system that the scientific process seeks to address.
Now, I want to make it clear that it's OK if your Dissidents are riding high on the limited information they have, funded by some externality (maybe not even realizing that they're not getting the benefits they expect — there are not a few obfuscating factors in a war). But if so, you're making your dreaded inquisitors out to be kinda suckers. Which, you know, the real world Inquisition was a lot of socioeconomic oppression masked in magical thinking too, so OK. But they sure as hutch didn't have an actual god on their side.