I have an ebike with both pedal assist and throttle (that I could theoretically change the speed limiter setting above 35km/h). But in day to day riding, I frequently get passed by people riding thinner wheeled road bikes.
I don't want to have to shower every time after pedaling to work. I love being able to get two big bags of Costco groceries, strap them to my bike and not have to dread the ride home which is uphill. It's great and sure I'm not getting tons of exercise each time, it allows me to keep going out with it a lot more than I would a normal bike. This source also corroborates the trend that e-bike riders get more exercise than conventional cyclists due to riding more.