Again with the pretending there is only one possible change here: a state change in high orbit excitation levels is nowhere near "the smallest such changes", yet we still call them quantum leaps because that's what they are. The distances and energies involved are HUGE at the atomic scale, which is the scale we must necessarily stay grounded in when discussing what a quantum leap "really" means. (where "really" is a misnomer because there is nothing that requires a scientifically precise term to be reflected in common everyday language. The only important part is that you don't use the meaning of the latter in the context of the first)