Ah yeah, let me run forward with my arty flare, drop a big red "I'm barraging here in 10 seconds" and wait for the mortars to relocate before I even fire 1 shot ability every time I somehow manage to get close to a mortar...
Isn't it 45 muni anyway, along with the 30 muni to unlock it, so 75 muni to fire 1 sub par arty piece at something that will move when it sees the huge red smoke cloud and simply set up and continue, its expensive, has a long cool down and is not good at wiping, only saying stay out of this area for 20 seconds or risk getting splashed by mud until I have teched anvil at which point, I have other options.
It's just the first strike of a maneuver. Not the complete solution.
Also a sniper grants it for free. no upgrade needed. Also you can get nades for some Flanking action , once the MG is forced away most of the time a mortar is pretty undefended.
A mortar pit doesn't go down just by mortaring right? you gotta put some extra effort first to force the brace