TL;DR: Due to being smaller and lighter, electric bikes and mopeds require significantly less energy to move themselves around than an electric car. The article starts with a headline about "oil demand" but then spends much of the rest of its length harping on consumer monetary costs instead. I could have said that in a lot fewer words. Actually, I just did.
Also, in SE Asia and other places where the primary mode of transport is a small motorbike, as it happens these small motorbikes actually pollute a lot for their displacement due to having basic uncomplicated engines, often not running very well, and lousy or absent emissions controls. ICE vehicles are also at their worst fuel consumption/distance traveled ratio when they're idling or crawling around urban areas at low speed. Replacing these with electric versions just makes sense.
Full disclosure: I own a gas guzzling truck, a fuel efficient car, seven motorcycles, and an electric bicycle. I use different tools for different jobs, as appropriate. If you're looking for a magic bullet, you will probably need it in a few different calibers.