Riding an electric bike is not cheating. European Standard (EN15194) certified e-bikes are Power Assisted Pedal Cycles. This means motor only activates when the rider pedals. In other words, the rider has to pedal and make an effort to ride the e-bike. The level of human effort and motor assistance can be managed by the rider from Pedal-Assist System (PAS) settings provided on the e-bike display. The rider can decide how much electric assistant they want from the motor. Therefore, riding an e-bike is a choice rather than cheating.
In some cases, riding an electric bike is advantageous for people who could not ride a regular bicycle due to many reasons such as they live in a hilly area, have a physical health condition that limits their freedom to ride effortlessly, want to ride to work without getting sweaty and exhausted or avoid cars for small distances.