Having those troopers require extra digging-out to kill (Discover roll, with the usual failure possibility) and having them be Warhorse gives you some nice security for your order pool.Warhorse is particularly handy if you run a Daofei Lt. They're also around to do Coordinated drop-mines action if you have spare orders or want to fortify. Overall well worth it over flashbots etc. if you have the points to spare, IMO.
They may know its a Gudan but they wont know if it has a Zapper or a Heavy Flame thrower and those are very different threats, just ask the Redeye that thought it was safe to fly over my camo token and then spent the entire game bricked.