You seem very concerned. Dont use it if you are hesitant.
I will say that your description of CX is...perhaps not as accurate as you think. CX races can include significant tree roots, quick hard drops downhill, bunnyhopping, crashes, curb hops, and more.
But really- dont use it if you are concerned. Buy a drop bar monstercross frame, slap 50mm tires on it, and dont be concerned itll break.