Bumping is replying to old threads that haven't been replied to in a long time, and it's frowned upon due to it "bumping" the thread to the top of the list (idk if that's why it's called bumping), therefore making it seem as if the mod or thread got updated or is active. People usually get upset if it's just a pointless question with no meaningful reason to be asked.
when there's no activity on a thread for a while, and the creator may have stopped working on it, it's good forum etiquette to not post any more on the thread, unless you have something really specific/constructive to add. these guys are overreacting a bit though.
I know, was just saying because you could technically take the beamng drivetrain and scale it up to fit the Sherp body, also editing the powertrain some for more realism
While you could technically do that, it'd be better to make a new drivetrain, especially since the engine is in a different place.