One reason people on the group chat were using @signalapp instead of approved government systems was to avoid records being kept. They want to avoid freedom of information act requests, subpoenas, and criminal discovery that could hold them accountable. This violates federal law.
Project 2025 trained many now in government to avoid keeping records for that reason.
@ProPublica's investigations:
https://www.propublica.org/article/inside-project-2025-secret-training-videos-trump-election