--> It´s way too strong compared to any other non-rocket indirect fire. It makes Leig and all mortars (including Soviet 120mm) look like stone catapults.
It comes significantly later than those mortars, and still later than the leig.
I don't think anyone here has said it's "fine". I think the OP is exaggerating quite a bit, especially since he leaves out what you just mentioned. It's super fragile, de-crewing with 2 men still alive is pretty stupid