So, I think it's pretty straighforward. First, they are not supposed to use personal devices for classified conversations. But they are allowed to use ordinar

So, I think it's pretty straighforward. First, they are not supposed to use personal devices for classified conversations. But they are allowed to use ordinary consumer devices for non-classified conversations. That even if not classified, they still might want to be secure -- or to communicate with other people who prefer signal. But those conversations need to be archived, per government policy. So on their ordinary consumer devices have a version of Signal on it that archives, to meet ordinary government policies. This is all ordinary, and I believe probably the previosu administraiton had the same thing. The only non-ordinary thing is that they insisted on using the consumer devices for classified conversations even though it violates policy, so just use the 'best' app on there for that. Which is not good enough, because you are not supposed to be having conversations including classified material on ordinary consumer devices, because they are not secure enough.