because they buffed it arc of fire and fire through teran..which made it to the good at /ironyoff
Actually from patch notes:
Raketenwerfer
The Raketenwerfer has been adjusted to be less potent at veterancy, but more reliable and more difficult to lockdown by HMGs.
Projectile no longer collides with terrain
Can no longer be suppressed
Veterancy 4 and 5 sight and range bonuses removed
Veterancy 1 camouflaged speed bonus from 100% to 25%
(and the target size/DPS chance under "BUG FIXES & QUALITY OF LIFE")