I think the guy meant to convey that the pics - specifically, their dates - were to demonstrate that he really was in Bethel during lockdown (as he said, no one was allowed to come and go), therefore he really is a Bethel "insider".
I could be wrong.

As for using common XJW expressions, I was doing that (in private) long before I faded or came here... in fact, I was a little surprised that so many of 'em were already being used.
Hell, from what I've read, the "rank-and-file" label originated AT Bethel.
As to the allegations, I absolutely believe 'em... most are just further anecdotal evidence of stuff we've already known about for years...
...and if the GB isn't "paranoid" by now, they're even bigger idiots than some of us thought.