Interesting, the issue is because the AI doesn't see those carriers as carriers. It sees them as mine layers. When a carrier is built it assigns it to either be a carrier and built strikecraft, or a minelayer and builds mines. It can't change its mind mid game like a human player can. Indeed I've seen Vasari minelayers be fairly suicidal as well, except with those at least the AI hasn't purchased the mines yet.

Indeed, I did this in a mod and its a noticeable improvement. While the advent probably have the best mines the few situations where its a good idea to use them aren't worth wasting entire carriers for it.

They could also just assign one of their three available squad points to a Homing Mine squadron while still using the other two available squad points for normal squadrons. That could help solve the problem I think. Using combat mine layers wouldn't be a bad Idea... Right?

I... dont like the mine layer squadron. I think its a fairly dumb system for laying mines... I'd rather have just an ability that laid mines from the drone hosts. cool idea, fairly dumb implementation imo

That's exactly what I did in my mod. Unfortunately the AI won't build any fighters if you tell it its a minelayer, and won't deploy mines with it if you tell it its a carrier, but for human players it works great. Zombie was trying to chase a pack of my drone hosts with some subverts one game and I just threw up a wall of homing mines. Try to use distortion field through that, heretics!