Pointing out facts isn't a weak argument, it's just logic. Having imagination has nothing to do with editing a sprite sheet to fake a scene. Have fun with your headcanon, but editing sprites won't make it canon.
If we follow your logic, then the entire gallery in this mod isn’t canon, because they’re also just edited original sprites, but by the original author.
The creator defines what is canon, not a fan. XenOthatboi already has his own story written where they are just best friends. Erasing the outer sprites and keeping only the middle pair just to force them facing each other won't make your ship canon, it's just basic image editing.