If you scale the way our technology works up to sufficient levels to accomplish the original event, I could see the following still holding: It is always easie

If you scale the way our technology works up to sufficient levels to accomplish the original event, I could see the following still holding: It is always easier to take advantage of matter/energy existing in the universe than to create it yourself. Supposing a civilization could communicate across galactic scales using this method, which seems easier? Crushing neutron stars / dropping things in black holes or constructing an appatus to emit an equivalent amount of power? Just because even we can technologically do something doesn't mean we don't take easier shortcuts. Working smarter, not harder scales. If it's based on naturally occurring raw material, it's not unreasonable that the source would jump around anyway.