Electrics take care of the noise and climate. Traffic in dense cities flows slow making two wheelers not very dangerous within urban areas over short distances.
By climate control I think they mean that motorbikes are near unusable in rain or in sun heat. Valid point, though the benefits outweigh it for bikers in Asia.
Modern four-stroke low-rev motorcycles/scooters are no noisier than cars. And lorries easily beat them in the noise contest.