It needst to be kept in mind that an E-bike only assists and still requires watts from the rider. It's an easy low threshold way of getting non cycling regular folk into bicycle touring. It's quite likely that the net health increase per every new individual would be significant, especially if take up e-biking or ordinary cycling in general as well.
Of course if you want to keep the 'undeserving' out that's a different thing altogether...
I personally think every new cyclotourist be it E or no is a good thing