go in a garage, guarentee 90% of the time they will use an impact. and the hammering impact part causes the threads to loosen up inside. kinda similar to how you smack a control arm to break the taper/bond between a ball joint
and im not a noob or weekend mechanic either lol
im also not saying breaker bars are bad, they are more budget friendly. but impact will be easier and just as safe as a breaker bar. putting a pipe on the breaker bar will make power torque than a impact gun. which is where you will break it, if you manage to