Those who aren't a digital-brained race can't control the THOUGHT Armor's Pilot Pod in the first place, at least not current ones. That's where the telepathic part comes in...though it's more that the races able to use the Thought Armor are capable of telepathy than it being used. I've checked my wording and removed mention of actual telepathy. The communication between the weapon and the Thought Armor itself is NOT telepathic in nature, and therefore is not altered by PSC/ADN. The submission is specific about the types of communication the system uses, with a section dedicated to it.
If a future model of Pilot Pod is rendered compatible with non-digital brained/non-telepathic races, then this weapon can be used by those models as well.
Much of the computational power IS handled by the CIES -- the weapon handles a minimalist amount of functionality, effectively sampling data on the weapon for the CIES and enacting the CIES' will on the weapon on which it is installed. However, there must be enough active processing in the weapon for it to say "Hey, you aren't an ally, I'm not firing" and other such things. Relying on CIES management alone would make them useful to the Mishhu, who have captured SAoY tech.
The reason I am not using a handplug (which was heavily considered) is because I am trying to avoid too much similarity to Mobile Suit Gundam, as well as the fact that using a hand connection prevents a few things like being able to use the fingers to minutely adjust aim since the weapon is linked to the palm -- as well as the fact the weapon can't be left behind on overload as a trap or as a makeshift bomb.