URL question.

My web dunce question of the week is,

Why would the images url be linked to aussie.zone when the community is blahaj.zone and the poster is lemm.ee?

Is it as simple as the lemm.ee poster might have seen it on aussie.zone and cross posted, or copied over from there?

Edit,

So, just checked this post on the sync app, (using Jerboa for the post), and sync has recognised the image as a URL? I'm confused, i loaded it in Jerboa like i'd normally load a screenshot as an image. Anyway, sorry if the picture doesn't display.

I'm just trying to understand the lemmy system a little better, not trying to highlight a perceived problem.