No, it's based on a theory from some random ass dude on Twitter (not the OP tweet) that "maybe" they "could" have put non-radioactive isotope signatures on the paper
Well we have the classic shill baker + shill assistant spamming every bread and sliding 10%+ of the posts
>I guess having sex with a child and with your niece / daughter isn't a big deal to you
only literal retards still believe this is true about any released photos
That's for a single state, and says nothing about a super secret un-forgeable isotope based watermark
Not a proof.
That's a different question entirely
The OP posted what amounted to a style guide, it isn't related at all to machine signatures or isotope-based watermarks (which is all conjecture at this point)