You're getting concepts mixed up. These aren't exploits. You can't breach a target with them. They're post-exploit persistence tools. A persistence tool has just three jobs:

1. Enable the mission.

2. Avoid discovery.

3. Frustrate attribution.

These tools are amateurish. By modern standards, all they accomplish is (1). But rootkit.tar.Z for SunOS 4.1.3 did that too.

Presumably, if the CIA is implanting backdoors, they're doing it in high-stakes situations: the kind where it's important they not be identified, and the kind where it's important that identification of a single compromised machine not instantaneously provide a signature that can be used to identify every other compromised host in their inventory. But, nope.

One obvious possible subtextual revelation from the CIA tool kit that we've seen is that they're not doing high-stakes implantation work at all, and this stuff is all aspirational.