It's just stupid design. Dealing with that flak truck is almost impossible. Nothing can sight for your AT gun, it destroys light tanks and infantry.
I can't blame anyone for artillerying that shit to death.
+1
I got two flack trucks in the middle of Kharkov last night plus spam of schreck volks+obers.
Seriously, what other thing can I do besides spamming Katys and let them rain death from above?
At least AT guns should realliably kill that building, but they do few damage and Flak Truck has more LoS than them. Should I be forced to take a recon doctrine to safely shoot it? Maybe downtech to T1 for making a sniper spotter? That's BS.