Honestly, just leave it alone. If a GM sees it, they see it. Let them take care of it if they so choose. There's a tremendous amount of things to do in Eorzea - don't waste time submitting report forms unless you've been personally affected by an action (e.g. harassment).

I'm not advocating that people who are flipping houses go unpunished, I'm more so calling out the fact that if it is indeed a bannable/suspendable offence, the GM's likely have a Party Finder window just as we do and will take action if it's demanded precedence according to the roles/responsibilities outlined in their job description.