https://wiki.debian.org/DontBreakDebian
With that said you could also check if the packages you require are available in the backports repository. It doesn't look like Restic or Podman have packages available but its possible they will during Trixie's lifetime.
While it is true that the majority of what people conceive of as American "militias" are reactionary, leftist community defense groups do exist. They have no where near the organizing capacity to march on DC but they can be seen protecting their local communities often under the umbrella label Antifa. Given the material conditions of the US, most of the focus is on providing marginalized groups with the skills and resources to protect themselves.