The only way certain people will trust that the Lloyd/Dijana correspondence is real is if Lloyd or Dijana come out and confirm it in some way.
Those people can't think logically.
I learned from that experience to trust Kim S. as a source.
Exactly. Kim has verified they are genuine. This doesn't mean Kim leaked them, it means Kim was sent them by Dijana at some point so is able to confirm their authenticity. It doesn't mean Kim had to be the only recipient of them so she is able to confirm they are genuine without being the leaker.
Simple logic.
And neither Lloyd or Dijana can accuse anyone of leaking anything without also confirming they are genuine. Which is why there is silence from them, and they have to resort to making anonymized attempts to claim they are fake and to spread doubt.
The messages have been confirmed. They are real. Anonymous accounts claiming they are not are either Lloyd or people associated with him (like his loyal little lap-dog Tibor).