So a tweet from somebody with a blurry picture of a man and woman is the proof?
That it was Page/Strzok? No, that is supposition in an attempt to understand the posted pic. Those 2 are the only couple in the cabal that we know of where the chick has a Kerryesque horse face. However the photo had meaning to someone in this mess. Likely P&S saw themselves and was part of their decision to cooperate since they were screwed if MI had stuff from that far back.