I don't see how this personal liberal view of how operational secrecy should he handled has any merit.
Liberal view

Honestly, the ridiculous holes you are digging yourself into.
This is nothing to do with anyone's politics. This was a group chat set up to discuss a particular mission.
Leaving aside whether they should be using Signal for this purpose, the point you keep failing to acknowledge is
THEY INVITED A FUCKING JOURNALIST WHO HAD NO SECURITY CLEARANCE IN TO THE CHAT BY ACCIDENT.
And, worse, no-one noticed throughout the chat.
If you think that lack of seriousness and level of incompetence is acceptable at the highest level of the US Government then OK then.
It's a strange position, but OK. If Trump thinks that level of incompetence is acceptable then holy shit!
But this is what happens when you have someone like Trump making appointments based on loyalty rather then competence.
We all know how you'd be posting had this happened on Biden's watch. Stop embarrassing yourself.