That's what I thought it might mean, which is a bit odd. I've been doing this mission for weeks now, and this is the first time I've seen this message. Every time it would spawn a group of AI, though, it would lock up the game entirely with a looping sound for about a minute before resuming. I tweaked this mission down so that I wouldn't be getting the "OPCOM has more than 80 objectives" message all the time (it's a full map mission on a rather large map with 3 teams plus civs) and it was running quite smoothly until today.

I hope it's just a weird thing with ARMA and a restart will fix it.