What they did is illegal. Any rank and file that did the same would be in prison for a decade, no questions asked.
In general, it seems like you're trying to "3d chess" incompetence into strategy, but try taking a step back and looking at it with clear eyes. This was a bad decision, plain and simple. Nobody is taking responsibility for it, and that makes it worse - these people are in charge of the largest intelligence and war machine on the planet. This is not okay.
As a consequence, any enforcement now would be viewed as extremely selective.
I have been exposed to a lot of classified information in meetings in DC that were supposed to be unclassified. This isn’t an isolated incident, it has been a systemic issue across every administration for as long as I’ve worked in DC.
People should focus less on the incident and more on why this has been normal for decades.
The underlying tension is that doing things the official way is extremely slow and speed matters. There is a longstanding bias toward taking more risks in terms of information exposure because being slow carries its own significant risks. Speed of decision making is critical and that has proven to be impossible if every interaction has to happen inside a SCIF. It is a tension the intelligence community is still grappling with.
IIUC, the "rank and file" go to prison for violating their NDA. At the highest level these people are appointed and don't have an NDA which is why senators / representatives can leak without punishment.
Here's a pretty good order of operations when your policy breaks the law or is so odious as to feel the need to hide it from other duly elected representatives in government:
1. Stop breaking the fucking law.
The rule of law matters. Even if it doesn't matter to you or Trump.
If you're talking about fear of leakers, the response to that is to tighten the distribution of information and start a counterintelligence investigation.
In any case the simple risk calculus is, what is the risk of adversaries getting a hold of this information and causing grave and lasting damage to national security and death vs the risk of political rivals leaking something. Pretty simple decision there and one that any cabinet member should get right.