[@Icepick] "absorbs certain bandwidths of broadband waves" does not equal thermally invisible. Plasma itself is incredibly hot. If you look at the main article linked in that subheader, you'll see that plasma stealth is proposed to use to reduce the radar cross-section of a craft, not for use as blanket invisibility against all forms of sensors. You're welcome to use it to reduce your radar cross-section, but by no means does it work as visual or even thermal invisibility.

Regarding your neural network, if it's only working in the one star system, I have no issues with that.