Yep, you read that right here under "Cycling to work can cut cancer and heart disease".

as a support for hills, not use it exclusively.

Totally. I commute (and locomote in general) via an electric bike here in Tokyo, where such bikes are very common.

You can get just as hard of a workout as with a manual bicycle — it's just that you go faster and cover more distance.

However, it also gives you the option to pedal lightly and rely on the motor more, when getting sweaty isn't convenient.