That's what this all boils down to. It's the exact same line of logic.
Sure there could be an omnipotent all powerful being that just chooses to stay hidden from us for no provable, observable, or obvious reason. It's just impossible to prove or disprove.
What if they don't need to accelerate? Neat, it's STILL a shit ton of energy. What if they can teleport? Neat, it's STILL a shitton of energy. What if they can hop dimensions or bend the universe? Neat, it's STILL a shit ton of energy.
What if it's not a shit ton of energy? Fuck it why not, how did they find us? They have tech for that? Fuck it why not, why aren't they showing themselves beyond these extremely rare sightings? They have a reason for that. Fuck it why not, why would every government hide these? Tech or war or something. Fuck it why not, why hasn't SETI or one of the thousand other independent science observatories or detectors not picked up any of this or reported on it?.....
and on and on and on.
So i can't prove that tomorrow the Sun God Ra won't descend from the heavens and sit atop the pyramids as if it was his throne and rule from on high, but I damn sure don't have any evidence that's why the sun is moving across the sky.