I decided to try for a double-godlike using the new guard posts (much more interesting, but also much easier*) and noticed that the AIs managed to have Neinzul Guard posts. Only 1 each, but still, more than they should have had. All they spawned were core cockroaches, which while annoying, didn't stand up well to near-permanent paralysis (24 Riot Mk2s are awesome: 6 each to guard the wormholes, 12 to go a-plundering).
So it's just a minor issue, as there were no hybrid hives, no enclaves, no weasels, or any other CoN unit, just the Neinzul Post and the cockroaches.
*By being forced to take out the dozen or so posts before attacking the core, I was as a side effect blowing huge holes in the AI's fleet. All I needed to actually take an entire homeworld was a full compliment of Mk2 and Mk3 Tanks and 40 Seige Starships (full compliment) all in transports. Send 1-2 transports at each guard post, pop, target, and retreat. The riot tazers sitting out on my side of the worm holes (combined with the riot shields blocking enemy ship movement) contained any retaliation. RCT I had 29.99% of all kills. Rio Mk2 had 11% (although somehow I had a 30% better survival rate of the RCT than I did of the Riots themselves...)