This is ain't much, I thought it would read like an DCGS IPIR report or showed us some BE numbers.
I am by no means an expert on anything, but "ain't much" is still a pretty fair chunk of intel. Even just a timeline would be enough to move assets, either in protection or to plan some type of counterstrike.
Not to mention the larger implications, which is this is the conversation that we know about. That they were chatting up this specific operation so casually on a an unsecured app and/or devices implies that they do this casually all of the time. This is just them getting caught.
(And just to add the obligatory "and they lied about it", which at this point barely makes a dent, but is still worth noting.)