Since armour didn't get touched and I'm seeing some folks getting upset, here are some armour counters/strats to try out. Feel free to add some of your own in comments!
1. Keep an eye on when they have it charged and when they use it. Armour's unfortunate downside is it announces a push before it even happens. Most folks wait for armour before pushing back in, so when you see it popped, you know they're coming! Get into position to receive it.
2. Armour also announces player positions; keep an eye on where the smoke flies and call out player positions and directions to your teammates!
3. Don't forget armour has an activation time! Players are locked in place for 30fr after pop, and it takes a total of 2 secs to activate. Players often forget these delays and rush into fights too soon. Take advantage of these misplays!
4. Don't paint useless parts of the map unless needed. Armour farmers take advantage of you covering their sections to farm more special. Places like the Shrine area of Skipper have no use except to farm special so try not to touch it unless needed if you notice a farmer using it
5. Two of the biggest counters to armour are legit rain and missles. More often than not armour signifies the start of a push. Rain shreds armour before it's useful and helps divert players so they can't use a certain route, and Missles delay and scatter players so they can't
stick together. What was supposed to be a well-coordinated push into mid is now a scattered offensive with some extra damage on them before you even start shooting! Take advantage and save these specials to weaken players trying to return to mid, and push them into bad positions.
It's painful for me, as a jr main, to tell you all how to destroy my weapon...but it's even more painful to hear people say my weapon/special is broken when it rlly isn't so plz feel free to share your strats too!