Why does everybody cry about arty being "Too OP"?

Cynd3r: On one hand, arty can access tanks that honestly shouldn't be hittable (I know that's not a word but i'm using it as a word k). No matter if they're under a hill on the other side of the map, arty can come for you.   On the other hand, it takes for freakin ever for a shot to land and the RNG is really high, so it's pretty much a gamble as to where your shot will land. Then you have to wait for a generally long reload time.    Personally it's one of those things where if I'm trying arty out, I feel frustrated and underpowered, but if I'm against an arty player i feel frustrated and like they're OP. Especially when I'm chillin on a hill, getting some nice dirty shots in, then BOOM I'm exploded.