Actually toasters need to be able to switch off a huge current, which causes arcing. This arcing may slowly burn the PCB and desolder the metal contact mounted on the PCB. At least that's what happened with my last toaster after >5 years. Repaired it once, then after a year it broke again, but this time the PCB through hole was severely burned and it wasn't trivially fixable anymore.

Motorized mechanisms... hmm. Well, sometimes toasters pop up toasts too hard making them land on the floor.