From people on Reddit: Something that blows my mind- but is fully true "Hell, I've been in fucking EVE Online alliances that had better opsec than this." "I'll raise you one: I've never been in any EVE alliance that didn't have better opsec than this." ..I noted Board Games(Secret Hitler, for example) require better opsec. So do card games- it's mindblowing to note this too... [Main comment by me - technical outlook]…
Even if we are generous and assume Signal's protocols and entire communication infrastructure are 100% safe and cannot be compromised, any one single person in the group chat using Signal on a compromised device invalidates all of that. The fact that Signal was used is less concerning to me personally than the fact that they had this group chat outside of the overall safety umbrella of fully end-to-end vetted systems…
One would hope indeed- I do wonder on that ......
There's another observation though- Salt Typhoon compromised wiretap infrastructure - before Signal, there's no doub't some stuff like this occured over text messages- Because of everyone's efforts to go to Signal- even if it's for the message disappearing- with this, with military branches pushing it hard- with Sweden's Miltary pushing it, etc(for non sensitive stuff)- there's so much of that , that the attack surface overall is massively reduced. In short, if there's going to be stuff outside of vetted systems- running that sort of stuff Signal- likely still helps. (I'm reminded again, of the JD Vance interviews where he let slip that he'd been targeted ,and was informed about it by agencies- but that he was good because of his Signal usage. Now, I don't know what measures he takes to avoid zero day exploits and whatnot- the TLAs would inform him of that- but from what he was saying, it sounds like they were sure he wasn't compromised by that.)
(I'm aware a serious targeted effort would be more intricate than Salt Typhoon/ Trying to use the country's own general Wire tapping capability to target the VP)
Edit: Also, this reveals a bit about psyche- J.D.Vance somewhat ribbed the president- there is probably pressure TO use Signal, so a record of him criticizing the President can't be found out by the President or those more allied with the President who could then start retribution- I imagine dynamics like that, which are human behavior- -ultimately are what absolutely drive all of this.