IMHO, it is completely plausible that the VFTW blogger, who lives in Austin, was searching for F fares DXB-AUS due to travel needs.

IMHO, it would be utterly insane if said blogger did not purchase the ridiculously low fully refundable and flexible F fare encountered before blogging about it, if he was truly searching that market due to travel needs.

Therefore, if the VFTW blogger truly found this fare before the FT poster, we would expect the VFTW blogger to have multiple tickets issued. Right? It was F on some decent airlines, ridiculously cheap and fully refundable. Buy it up and use it if you need to. The VFTW blogger is not randomly searching the internet for whichever city pairs he feels like looking for mistake fares. That's a waste of the VFTW blogger's time. Credit cards don't pimp themselves ya know!

So, I have yet to see a post or comment from the VFTW blogger indicating whether any tickets were purchased or what itinerary he is flying or which website he used to price it out (ITA screenshots were in the original post but of course can't purchase there!).
Maybe I missed them and can be pointed in the right direction.

Or maybe I can find some other evidence of tickets being issued. Or not.