Nothing, just like nothing would stop a random internet anon from faking a video of the same thing. Even if that existed, it still wouldn't be sufficient evidence (especially given this is a different synthesis than the one in the paper), it would just be much more overblown.
Wait for lab reconstructions, or at the very least, this anon's writeup, instead of following a live twitter blog and then complaining that it's not conclusive.
>I don't do videos of things I intend to be writing a text from. Ever. It's bad tone. I hate when it happens to me, and I don't want anyone to share this fate. >I will put a GdPO4 bead and one of the good samples onto paper ships and film >But it will be only After I will be sure I Got It, okay?